Sunday, March 15, 2009

WiMedia Alliance to transfer UWB Technology

The WiMedia Alliance will transfer its UWB specifications to Bluetooth Special Interest Group (SIG), USB Implementers Forum (USB-IF) and Wireless USB Promoter Group as they apply to each entity's expertise for standardization and certification or both.

The transfer will simplify and streamline the development and productization of Wireless USB solutions. Developers of Wireless USB solutions will be able to receive certification for complete Wireless USB solutions, including MAC, PHY and protocol from the USB-IF. USB-IF testing will create a one stop certification program for Wireless USB devices, speeding product time-to-market.

"This move will consolidate all elements required to bring certified Wireless USB solutions to market, further enabling our members to innovate and develop new and exciting Wireless USB devices and make them available to consumers quickly," stated Jeff Ravencraft, USB-IF president and chairman. "WiMedia Alliance has made a significant contribution to the advancement of UWB; this technology transfer is a logical next step in the evolution of UWB and from our standpoint, is best for the industry and consumers."

European Research Initiative Deploys Juniper Ethernet Routing and Switching

FEDERICA, a major long-term project to implement an experimental network infrastructure to support future Internet research on new networking technologies in the university and research community, is using Juniper Networks to provide its Ethernet-based high-performance network infrastructure. Specifically, FEDERICA selected the Juniper Networks MX Series Ethernet Services Routers and EX Series Ethernet Switches.

"Demands on international research and education networks are very specific," said Mauro Campanella, senior R&D Researcher at Consortium GARR, which manages the Italian research and education network, and the leader of the FEDERICA project. "The platform has to support virtualization, high-performance and security at scale, provide flexibility to enable continuous innovation and remain open to support large and diverse research challenges. Juniper Networks has expertise in this environment, and is known for providing an open, standards-based solution that encourages rather than inhibits innovation. This is the type of technology we needed to provide the flexible, customizable research network infrastructure that our project demands. The technology matches the FEDERICA network infrastructure provided by national research and education networks through the GÉANT2 high bandwidth backbone network very well. Juniper has been a participant in the FEDERICA project since it was proposed, and the high level of skills that Juniper is contributing is greatly valued by the project team."http://www.fp7-federica.eu

TerreStar Sets Launch Date of May 28

TerreStar has completed the final pre-launch performance testing of its upcoming 2 GHz mobile services satellite, TerreStar- 1. The satellite has now entered into the final phase of integration and testing at Space Systems/Loral.

"Both the satellite and reflector are substantially ready. Our launch provider, Arianespace, has accepted our requested launch date of May 28th. We are now focused on final integration and preparations for ship and launch" commented Dennis Matheson, TerreStar Chief Technology Officer.

Arianespace has reported that the launch vehicle, an Ariane 5 ECA, has arrived at the launch site in French Guiana and is in final preparation for satellite integration.

TerreStar also has secured launch and in-orbit insurance coverage for TerreStar-1.

NEC Australia Tests Amplified GPON for Extended Range

To boost the reach of residential broadband, Dr. Ka Lun Lee and colleagues at the University of Melbourne and NEC Australia in the state of Victoria have developed a GPON system that combines a high-powered laser with Raman amplifier. Installed in the central office of a network provider, this high-powered laser feeds the optical signal as it heads out over a fiber. This increases the power and reach of the signal by a factor of almost ten. Lee's team built a mock network with a signal transmitter, a simulated splitter, and a receiver at the other end. Their proof-of-concept experiment successfully transmitted data over 37 miles of single mode fiber, error-free, at a speed of 2.5 Gbps. A paper on this topic will be presented at the upcoming Optical Fiber Communication Conference and Exposition (OFC)
next week in San Diego.

Federal Court Dismisses Broadcom Complaint Against Qualcomm

The United States District Court for the Southern District of California granted Qualcomm's motion to dismiss a lawsuit brought by Broadcom seeking a declaration that Qualcomm's patents are exhausted and unenforceable. U.S. District Court Judge William Q. Hayes held that Broadcom failed to show it was entitled to declaratory relief because it did not identify any specific patents which were allegedly exhausted, or an exhaustion triggering sale or license. The court also ruled that Broadcom's purported injuries were too speculative to support the claims alleged.

Fujitsu Conducts Collaborative Field Testing of LTE with NTT DoCoMo

Fujitsu has conducted successful field testing for Long-term Evolution (LTE) in collaboration with NTT DOCOMO using 4x4 MIMO. The testing took place in the Special Ubiquitous Zone, an area of the northern Japanese city of Sapporo in Hokkaido, designated by the Ministry of Internal Affairs and Communications in 2008 as a wireless communications testing area,.

The testing involved prototype LTE base stations developed jointly by NTT DOCOMO, Fujitsu and Fujitsu Laboratories. MIMO technology was employed to yield wireless transmissions in the range of 120 Mbps (using 10 MHz bandwidth) in Sapporo's urban environment.

Fujitsu and Fujitsu Laboratories were selected by NTT DOCOMO in 2006 to be the developer and manufacturer of their wireless LTE base stations. Since then, they have worked together with NTT DOCOMO to develop these technologies using 4x4 MIMO, which increases speed and capacity in both transmitting base stations and receiving mobile stations, and the three companies have performed successful tests of a prototype three-sector LTE base station that has a transmission capacity of 300 Mbps per sector on the downlink (20 MHz band).

The field testing involved LTE transmissions using NTT DOCOMO test stations in Sapporo's urban environment, assessing the throughput characteristics of 4x4 pre-coding MIMO on the downlink and confirming that a maximum of 120 Mbps (using 10 MHz bandwidth) could be attained over a measured course. This would be equivalent to 240 Mbps throughput using the 20 MHz maximum bandwidth that LTE allows. These tests revealed that the adaptive switching used in MIMO multiplexing was effective in achieving stable throughput in outdoor carrier environments.

Broadcom Introduces "Persona" IP Phone Processors in 65nm

Broadcom announced a new scalable IP communications design platform featuring advanced 65 nanometer IP communications processors that enable a full range of high performance, low power, low cost products for next generation IP phones and multimedia terminals.

The new Broadcom Persona design platform, based on its flagship BCM11107 VoIP processor, enables enterprise and consumer IP phones to offer multimedia capabilities, premium audio, robust Ethernet switching, enhanced security and extensive peripheral support.

"Next generation IP phones are positioned to become the central communications portal of both the office and home, enabling users with advanced applications to take advantage of multimedia features, streaming video and touch screen interfaces," said Martyn Humphries, Vice President & General Manager for Broadcom's VoIP line of business. "Multimedia functionality should ultimately increase user efficiency, and productivity thereby accelerating high quality, advanced IP communications devices in the enterprise and a high quality experience in the home."

Several designs will be offered. This includes the Broadcom BCM11107 for higher end Gigabit multimedia telephony applications, the BCM11109 for mainstream Gigabit enterprise applications, and the BCM11170 for value-line and low-end enterprise, small-to-medium-sized business (SMB) and small office/home office (SoHo) applications.

Broadcom said it will offer pin-compatible Persona designs so that manufacturers can leverage a common hardware design and printed circuit boards (PCBs) across multiple products.

Each single-chip Persona device features a Gigabit or Fast Ethernet switch with packet filtering capabilities and physical layer devices (PHYs) to support high-speed networks, super-wideband capable analog audio codecs, and high performance applications and digital signal processors which support Broadcom's PhonexChange IP telephony software suite. PhonexChange is a flexible software platform used across all Broadcom IP phone solutions, allowing IP phone customers to leverage a common software code base across product portfolios, which in turn, minimizes engineering development resources, and time-to-market. The software suite includes a standards based Session Initiation Protocol (SIP) signaling stack, Broadcom's high fidelity SmartAudio voice enhancement technology, multimedia and video telephony modules, provisioning and security software, along with other key components required to build Ethernet IP phone products. PhonexChange also includes built-in support for Broadcom's industry-leading Bluetooth and Wi-Fi connectivity products, allowing OEMs to add best-in-class wireless technologies to expand functionality for next generation products.

Ikanos and Sumitomo Electric Networks Present Papers on VDSL2 Stabilization

Papers co-authored by Ikanos Communications and Sumitomo Electric Networks on the effectiveness of online reconfiguration (OLR) technology in combination with the most advanced very high speed digital subscriber line (VDSL2) technology will be presented by Sumitomo Electric Networks' technologists at this week's Institute of Electronics, Information and Communications Engineers general conference.

As part of OLR, Ikanos' Rapid Rate Adaptation (RRA) VDSL2 technology -- an ITU-T SOS standard-based offering -- allows service providers to maintain link connectivity, even when signal-to-noise ratio (SNR) margin drops below normal operating levels. The technology enables transceivers to monitor line conditions and dynamically adapt the data rate without interrupting service for retraining, as long as there is adequate bandwidth to absorb the impact of the noise. Ikanos' chipsets also use on-chip quality of service (QoS) capabilities to enhance RRA by prioritizing traffic and quickly communicating the status of the link to other layers in the network. RRA in combination with OLR technology further enhances the stability of broadband services.

"In deployment scenarios, VDSL2 lines are bundled, thereby providing the potential of disturbance noise caused by cross talk," said Dr. Yasushi Kida, director at Sumitomo Electric Networks, Inc. "OLR technology, combined with Ikanos' industry leading VDSL2 access technology, prevents link drops and secures SNR ratios. These improvements are designed to ensure that premium services, such as triple play and interactive broadband over VDSL2, are not interrupted in noisy conditions."


Ericsson Claims 500 Mbps VDSL2

Ericsson has demonstrated a VDSL2-based technology that achieves data transfer rates of more than 500 Mbps (0.5 Gbps) over twisted copper pairs. The technology uses line bonding and crosstalk cancellation for DSL, also known as "vectorized" VDSL2. The demonstration showed aggregated rates of above 0.5Gbps at 500m, bonding six lines.

Ericsson said crosstalk cancellation (vectorized VDSL2) enables extremely high end-to-end transmission rates, improving VDSL2 performance by reducing noise originating from the other copper pairs in the same cable bundle. This increases capacity and reach, boosting the number of customers that can be connected. Vectoring technology also decouples the lines in a cable (from an interference point of view), substantially improving power management, which can reduce power consumption. Line bonding means bundling several lines into one and assumes that several copper lines are available at the site, which is typically the case. The technology is suitable for fiber extensions, combining fiber and last -mile copper for backhauling.

Håkan Eriksson, CTO at Ericsson, says: "This demonstration confirms Ericsson's leadership in broadband access technology and our commitment to the continued research and development of DSL technology to improve operators' business with new access solutions. It also proves Ericsson's abilities to provide future mobile backhauling, which will enable quick and cost-effective introduction of Long Term Evolution (LTE) solutions."

Cisco Unveils Unified Computing System

Cisco unveiled its Unified Computing System -- a data center architecture that integrates compute, networking and storage resource using the virtualized "cloud" paradigm. The system integrates a low-latency, lossless 10GE unified network fabric with enterprise-class, x86-architecture servers.

Cisco's Unified Computing System leverages a "wire once" unified fabric with an industry standard computing platform to optimize virtualization, reduce data center total overall cost, and provide dynamic resource provisioning. While Cisco has always provided networking gear, the Unified Computing System model builds on its more recent Data Center switching products to include server and storage capabilities.

Key Unified Computing System elements include:

Compute - Cisco is introducing a scalable chassis server that incorporates new Cisco UCS B-Series blades based on the future Intel Nehalem processor families (the next generation Intel Xeon processor). The Cisco blades offer patented extended memory technology to support applications with large data sets and allow significantly more Virtual Machines per server.

Network - The Cisco Unified Computing System provides support for a unified fabric over a low-latency, lossless, 10 Gbps Ethernet foundation. This network foundation consolidates what today are three separate networks: LANs, storage area networks (SANs) and high performance computing networks. This lowers costs by reducing the number of network adapters, switches, and cables and by decreasing power and cooling requirements.

Virtualization - Cisco security, policy enforcement, and diagnostics features are now extended into dynamic virtualized environments to better support changing business and IT requirements.

Storage Access - The Cisco Unified Computing System provides consolidated access to both storage area networks (SANs) and to network attached storage (NAS). Support for a unified fabric means that the Unified Computing System can access storage over Ethernet, Fibre Channel, Fibre Channel over Ethernet or iSCSI, providing customers with choices and investment protection. In addition, IT staff can pre-assign storage access policies for system connectivity to storage resources, simplifying storage connectivity and management, and helping to increase IT productivity.

Management - Management is uniquely integrated into all the components of the system, enabling the entire solution to be managed as a single entity through the Cisco UCS Manager. The Cisco UCS Manager provides an intuitive graphical user interface (GUI), a command line interface (CLI), and a robust application programming interface (API) to manage all system configuration and operations. Cisco UCS Manager helps to increase IT staff productivity, enabling IT managers of storage, networking, compute and applications to collaborate on defining service profiles for applications. Service profiles help to automate provisioning and increase business agility, allowing data center managers to provision applications in minutes instead of days.

Energy Efficiency - IT managers can achieve more energy efficient data centers with the Cisco Unified Computing System - it uses one- half the components, and requires less cabling and power/cooling than legacy server installations.

Cisco said its Unified Computing System will scale to up to 320 discrete servers and thousands of virtual machines, with the ability to scale I/O bandwidth to match demand

Some other notable points:

  • Cisco estimates that 31,103,864,053 kilowatt hours of electricity per year could be saved by unifying aging traditional servers and supporting infrastructure. This is equivalent to the energy output of more than 15 U.S. coal fired electric plants and 35 million tons of C02.

  • The memory of one Cisco Unified Computing System could contain all 138,893,908 Individual Tax returns filed last year in the United States

  • U.S. Wikipedia would consume less than 50% of the memory in one Cisco Unified Computing System. It takes only 40% of the Cisco Cuss's system resources to host all of the US Wikipedia.

Some additional product specifics:

  • Cisco UCS 6100 Series Fabric Interconnects is a family of line-rate, low-latency, lossless, 10-Gbps Cisco Data Center Ethernet and FCoE interconnect switches that consolidate I/O within the system. Both 20-port 1RU and 40-port 2RU versions accommodate expansion modules that provide Fibre Channel and/or 10 Gigabit Ethernet connectivity.

  • Cisco UCS 5100 Series Blade Server Chassis supports up to eight blade servers and up to two fabric extenders in a 6RU enclosure without the need for additional management modules.

  • Cisco UCS 2100 Series Fabric Extenders bring unified fabric into the blade-server chassis, providing up to four 10-Gbps connections each between blade servers and the fabric interconnect, simplifying diagnostics, cabling, and management.

  • Cisco UCS B-Series Blade Servers based on next generation Intel Xeon processors adapt to application demands, intelligently scale energy use, and offer best-in-class virtualization. Each blade server utilizes network adapters for access to the unified fabric. Cisco's unique memory-expansion technology substantially increases the memory footprint, maximizing performance and capacity for demanding virtualization and large-dataset workloads. In addition, the technology offers a more cost-effective memory footprint for less-demanding workloads.

  • Cisco UCS Network Adapters are offered in a mezzanine-card form factor. Three types of adapters offer a range of options to meet application requirements, including adapters optimized for virtualization, compatibility with existing driver stacks, or efficient, high-performance Ethernet.

  • Cisco UCS Manager provides centralized management capabilities that serve as the central nervous system of the Cisco Unified Computing System. Cisco UCS Manager is the embedded software that unifies system components into a seamless, cohesive, system.
  • In January 2008, Cisco introduced its Nexus 7000 series, a massive and ultra-fast networking switch that will be the main brain for coordinating data center traffic. The product, which was developed by start-up Nuova Systems, serves as Cisco's flagship data center-class switching platform for combining Ethernet, IP, and storage capabilities across one unified network fabric. The Cisco Nexus 7000 Series sets forth the company's Data Center 3.0 vision. The platform is designed for next generation data center infrastructure deployments of virtualized servers, storage, networks and applications. Using a unified fabric would eliminate the need for parallel storage and computational networks, reducing the number of server interfaces and significantly reducing the cabling and switching infrastructure required in the data center. At the heart of the network is a lossless unified switching fabric capable of simultaneously forwarding storage, Ethernet, and IP traffic. Cisco's Nexus 7000 is a scalable modular platform that delivers up to 15 terabits per second (Tbps_ of switching capacity in a single chassis, supporting up to 512 10 Gbps Ethernet and future delivery of 40- and 100-Gbps Ethernet. Its unified fabric architecture combines Ethernet and storage capabilities into a single platform, designed to provide all servers with access to all network and storage resources. Key components of the unified fabric architecture include unified I/O interfaces and Fibre Channel over Ethernet support. Nuova's founders include Ed Bugnion, Luca Cafiero, Prem Jain, Soni Jiandani, Tom Lyon and Mario Mazzola. Bugnion is a former co-founder of VMware and Lyon formerly founded Ipsilion Networks. Cafiero, Jain, Jiandani and Mazzola are all former Cisco executives.

  • In July 2007, Cisco announced a strategic investment in Vmware. The company said its purchase was intended to strengthen inter-company collaboration towards accelerating customer adoption of VMware virtualization products with Cisco networking infrastructure and the development of customer solutions that address the intersection of virtualization and networking technologies.

Salaries at Deutsche Telekom to Rise 5.5% over 24 Months

Deutsche Telekom and its main labor union, Verdi, have reached agreement by which pay will increase by a total of 5.5 percent in two steps over a period of 24 months. The agreement covers pay for employees at Deutsche Telekom and its service companies. Pay will rise by 3 percent backdated to January 1, 2009 and by 2.5 percent the following year.

In addition to this, employees will be officially protected from dismissal for another year. This means that employees at Deutsche Telekom are guaranteed jobs up until the end of 2010 and employees in the service companies until the end of 2013. A year's extension has also been agreed for the ban on selling the service companies. Hence, it will not expire until the end of 2011.

"The result is a reasonable compromise. We have succeeded in working out a differentiated solution that is tailored to the varying needs of our employees. At the same time, it takes the company's economic requirements into account. Additionally, the result keeps our service companies on track in terms of competitiveness," stated Thomas Sattelberger, Chief Human Resources Officer at Deutsche Telekom.

UPnP Specifications Named International Standard

UPnP technology has attained worldwide recognition by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). In December 2008, ISO and IEC published an international standard version of the UPnP Device Architecture and Device Protocols. This achievement as the world's first international standard for device interoperability on IP networks solidifies UPnP architecture's position as the leading technology for discovery and control of networked devices.

Building on this momentum, UPnP Forum also announced the release of UPnP Device Architecture Version 1.1 (UDA 1.1), a significant enhancement of the architectural elements used to define protocols for communication between controllers or control points, and devices. UDA 1.1, a fully backward-compatible update to UDA 1.0, adds a number of extensions, including:

  • Support for the full range of XML Schema data types to provide more protocol design options

  • Multicast event notifications to reduce network traffic

  • Improved robustness of device discovery on wireless networks

  • Improved performance and scalability on large networks

  • Compliance with RFC 3927 (the IETF standard for automatic IP address assignment), SOAP 1.1 and the WS-I Basic Profile to increase alignment with Web services technologies

  • IPv6 support directly into the UPnP Device Architecture and clarifies operation of devices that support multiple IP addresses including both IPv4 and IPv6

  • Many clarifications and explanations to assist implementers

UPnP Forum has also completed several new specifications including updates to its Audio Video (AV) and Quality of Service (QoS) device control protocols and services. The latest QoS service descriptions (QoS:3) feature parameterized QoS for the first time. The QosDevice is responsible for providing the appropriate network resources to traffic streams and information about the state of the device as requested by the QosManager. This allows QoS:3 to facilitate bandwidth reservation, which will result in significantly smoother video quality via networks that support reservation including MoCA and HomePlug.

PMC-Sierra Introduces First Symmetric 10G EPON Platforms

PMC-Sierra introduced complete systems for symmetric 10 Gbps IEEE 802.3av EPON, including Optical Line Terminals (OLT) and Optical Network Units (ONU).

The PAS8011 system for 10G OLTs and the PAS9011 system for 10G ONUs integrate all the functionality required from an OLT and ONU running at 10G rates, including transceivers, and leverage PMC-Sierra's market-leading EPON capabilities and analog expertise.

As the next generation of PMC-Sierra's EPON devices, the solutions are interoperable with more than seven million EPON ONUs deployed worldwide that are based on PMC-Sierra's devices. The company said this enables a smooth and gradual upgrade from 1G EPON to 10G EPON, using the same fiber and installed splitters. The optical budget remains constant as well. PMC-Sierra's 10G EPON solutions include backward-compatible Service Dynamic Bandwidth Allocation (DBA), which enables configurable high system performance in a multi-service environment for access, wireless backhaul and cable TV networks. The solutions are IEEE standard compliant and interoperable, following carrier requirements.

The systems are now commercially available. PMC-Sierra will demonstrate these second-generation 10G EPON platforms at the upcoming Optical Fiber Communication Conference and Exposition (OFC) in San Diego.

"PMC-Sierra's 10G EPON solutions and the increased availability of optics supporting 10G rates have enabled carriers to begin trials," said Raphael Sankar, vice president of marketing for PMC-Sierra's Fiber to the Home Business Unit. "This performance will allow carriers to provide new services, such as the next level of HDTV broadcasting and advanced business offerings, while further reducing capital expenditures. With this demonstration of symmetric 10G EPON, PMC-Sierra continues to solidify its leadership position in FTTH silicon solutions for EPON and GPON, and now 10G EPON."

Telekom Srbija Upgrades Optical + Access with Alcatel-Lucent

Telekom Srbija, the main telecommunications operator in Serbia, has awarded a contract to Alcatel-Lucent to expand, extend and upgrade its existing network. Under the agreement, Alcatel-Lucent will provide its packet optical transport solution for DSLAM traffic aggregation and Ethernet business services while the 1626 Light Manager dense wavelength division multiplexing (DWDM) system will be used for long-haul transport. Additionally, Alcatel-Lucent will supply its DSL and Litespan /MSAN technology and the associated services of project management, software integration, integration services and technical support services. Financial terms were not disclosed.

Telkomsel Selects Nokia Siemens Networks

Indonesian mobile operator Telkomsel has signed a new frame agreement with Nokia Siemens Networks to greatly expand its existing network coverage, boost capacity and improve performance. The deal covers the supply, deployment and integration of WCDMA/HSPA radio access networks (RAN) as well as 2G business support system (BSS) and services solutions in the country. This includes the supply of Nokia Siemens Networks' most energy efficient, Flexi base station. Financial terms were not disclosed.

NSN noted that the Indonesian market holds tremendous potential for mobile voice and data services, with active subscribers making up less than half a population of 240 million.

Sarwoto Atmosutarno, CEO Telkomsel, said, "This year, by collaborating with various network vendors, Telkomsel will deploy 4000 new base stations, with a total investment of USD1.5 billion, which is an effort to provide a level of communications comfort to herald the new era of quality-based services as promoted by the government.

Sierra Monolithics Unveils 100G Mux and Demux Chipset

Sierra Monolithics introduced the world's first 100G multiplexer with clock multiplier unit (CMU) and demultiplexer with clock and data recovery (CDR). The first in a planned family of 100G solutions, the devices are key components for equipment used in both the short-reach data center and high-performance computing market, as well as long-haul and metro carrier networks.

Sierra Monolithics's Theta-100G solution includes the SMI10021 10:4 MUX/CMU and SMI10031 4:10 CDR/DEMUX devices. Each uses the same fourth-generation, 130-nanometer IBM 8HP bipolar complementary metal-oxide semiconductor (BiCMOS) silicon germanium (SiGe) process technology as the company's recently introduced 40G solutions. These devices are available in a surface mount BGA (Ball Grid Array) package.

The company said BiCMOS is a natural choice for 100G because it is well suited for fast transistor switching requirements where low noise is essential. Bipolar SiGE results in higher gain, higher frequency, and lower noise floor as compared to CMOS, allowing transmission systems to meet stringent eye quality parameters. The Theta-100G chipset operates at 4 x 25.0 Gbps to 28.3 Gbps (100-113 Gbps) and incorporates an integrated, dual-polarization quadrature phase-shift keying (DP-DQPSK) modulation precoder function that makes 100G networks extremely resistant to the type of impairments that are often encountered in older fiber.

"Sierra Monolithics has built on the leadership foundation of our pioneering 40G family to deliver the industry's first 100G MUX/CMU and CDR/DEMUX," said Javed Patel, President and CEO of Sierra Monolithics. "This chipset will enable the development of 100G transponder modules and line cards that will relieve carriers' increasingly congested network routes and significantly lower their transport costs per bit, while also increasing throughput in data center networks so they can support today's exponentially growing demand for video, peer-to-peer and virtualization services."

The Theta-100G chipset incorporates a 10x10.3Gb/s (MLD/CAUI) or 11x11.2Gb/s SFI-S interface on the client side, as well as a de-skew function in compliance with OIF SFI.S, plus a line side pre-skew function for the MLD/CAUI interface with a depth of 84UI. The inclusion of on-chip, selectable single- and dual-DQPSK precoding circuitry delivers high spectral efficiency, high optical signal-to-noise ratio sensitivity, and robustness against dispersion. The DQPSK precoding function is implemented with dual I/Q-interleaved outputs (4x28Gbps) for dual-polarized (DP-DQPSK) applications. The precoding function may also be configured to enable a single-pole 2x56Gb/s DQPSK modulation structure with a pair of external 2:1 multiplexers through use of the synchronous high-speed clocks which may be programmed to any desired clock-to-data skew.

Other features include on-chip industry-standard selectable phase detector on-chip dual-mode (PRWS) pattern generators and error checkers, and SPI control interfaces with clock rates to at least 150 MHz. Typical jitter swing is 3.7psec p-p typical, and the differential output level is 0.6 to 1.2V p-p. Power consumption is a low 4 Watts max with high-speed clock outputs disabled. The chipset will enable the development of 100G-capable line cards and transponders, and will support the 300-pin multisource agreement (MSA) pluggable module definition and, in the future, smaller form factors, as well.