Xilinx and Wintegra have developed a 3GPP-LTE baseband targeted design platform (TDP). The new platform reduces the bill of materials (BOM) cost and power consumption of baseband processing (compared to conventional design approaches). The platform incorporates a high degree of flexibility and scalability, while accelerating the development of Long Term Evolution (LTE) products. The LTE baseband TDP with prototypes using WinPath-2 silicon and Xilinx Virtex-5 FXT FPGAs will be released in May 2009. Designs based on the new WinPath-3 and Xilinx Virtex-6 devices will be available in the fourth quarter of 2009.
The platform combines the Xilinx Virtex-5 or Virtex-6 family of field programmable gate arrays (FPGAs) with Wintegra’s WinPath-2 or WinPath-3 family of access packet processors and software to provide a complete digital baseband and transport solution for 4G radio standards, including both time division duplex (TDD) and frequency division duplex (FDD) modes of LTE. It delivers excellent flexibility for both channel cards and network interface transport cards to address the full range of basestation (eNodeB) implementations from enterprise femtocells to multi-sector macro basestation form factors.
Cost-Power Optimized Design
The LTE baseband TDP combines multiple baseband and transport functions into fewer devices, including all the physical layer (PHY), media access control (MAC), and network and air interface security and encryption functions, as well as an optional Common Public Radio Interface serializer/deserializer (CPRI SERDES).
The software-defined nature of the platform enables basestation developers to ‘future-proof’ their products for the rapidly evolving world of cellular communications. The open framework facilitates integration of custom intellectual property components enabling developers to differentiate their products. The reprogrammable and reconfigurable architecture of the platform also makes it possible for operators to undertake field software upgrades without expensive hardware improvements or replacement programs.
Integrated Test and Verification
Provisions are incorporated in the platform for monitoring standards compliance at multiple points throughout system development using the Agilent VSA software. The flexibility of the VSA software enables validation of the baseband development at both a pure software model level during the design concept phase and later using digitized signals from the Xilinx baseband development board during the implementation phase.