Synopsys Expands LTE Model Library with TDD Support

Synopsys Inc. has announced the availability of the Time Division Duplex (TDD) mode in its Long-term Evolution (LTE) Model Library for physical layer system simulation. The addition of the TDD mode to the proven LTE Model Library enables developers of semiconductors for LTE network equipment and devices to quickly and reliably extend their designs to support this important version of the 3rd Generation Partnership Project (3GPP) LTE standard.

The 3GPP LTE standard is the latest standard in mobile network technology. The primary advantages of LTE are high throughput, low latency, a simple architecture resulting in low operating costs, and support for both TDD and Frequency Division Duplex (FDD). Synopsys' LTE library includes models of the transmitter and the physical channel as defined in the 3GPP standard as well as functional models of ideal receivers that can serve as references, providing an end-to-end simulation chain for both uplink and downlink transmission and reception. By leveraging both FDD and TDD mode models from the LTE Model Library, designers can focus on the development of highly-optimized, multi-mode modems for the entire LTE standard.

"The use of behavioral models of Xilinx's baseband IP together with the Synopsys LTE Model Library allows customers to assess the performance advantages of our IP within the context of a standards-compliant system," said Mark Quartermain, baseband marketing manager at Xilinx. "Synopsys' ability to deliver an end-to-end LTE physical layer model along with high-performance simulators enables system architects to accelerate their algorithm design by relying on standard-compliant reference models for the entire physical layer simulation chain."

The LTE Model Library offers ready-to-use, standard-compliant test benches and simulation scripts that cover the test scenarios as defined in the LTE standard document. Models and scripts adhere to release 8.9 of the 3GPP LTE standard and will be upgraded as the standard evolves. In addition, the reference models in the LTE Model Library have been optimized to take advantage of the stream-driven data flow technology in Synopsys' SPW and System Studio tools, and are designed to provide a comprehensive and efficient development environment for advanced digital signal processing design.

"The complexity of the LTE standard requires simulating more than 100 billion test vectors to check for compliance, creating quite a verification challenge," said Johannes Stahl, director of marketing for system-level design at Synopsys. "Our LTE models are highly optimized for simulation performance. Together with our advanced algorithm design tools, the new LTE Model Library helps base station and handset modem designers ensure their functional design meets the LTE standard in the shortest possible time."

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