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New ST solution targets picocell basestation modems

Posted: 01 Dec 2005 ?? ?Print Version ?Bookmark and Share

Keywords:STMicroelectronics? st? picocell? base-station? modem?

STMicroelectronics (ST) unveiled what it touts as the industry's most comprehensive solution for picocell basestation modems. According to the press release, ST's offering combines the superior performance of its STW51000 SoC baseband processor for wireless infrastructure applications, with multi-standard software libraries, designed for GSM, EDGE, W-CDMA and WiMAX networks.

By combining a DSP, ARM cores, a large amount of embedded memory, and dedicated co-processors in a single device with software libraries, the new baseband modem offering meets the cost and size constraints of picocell and nanocell basestation designs. ST added that the STW51000's unparalleled chip-level integration results in the lowest cost-per-channel and an outstanding channel density of 20 voice users for the 3GPP WCDMA Release 4 with a single device.

"Cost-effective picocell deployments are set to unlock a lucrative revenue stream to our customer, delivering increased capacity and improved coverage in areas of high user density," said Daniel Abecassis, groups vice president and GM of ST's wireless infrastructure division. "Optimized for Pico BTS implementations, ST's solution provides one-stop shopping for equipment suppliers, saving their material and design costs, as well as simplifying and speeding up modem deployments in picocell basestations."

Compared with other solutions, said the company, its basestation modem offers a lower BoM and smaller footprint, as well as better performance. One chip delivers up to 1.2GHz of quad-MAC DSP core performance and 300MHz of ARM926 processing power. Both DSPs only run the signal processing tasks, which they are optimized for, and thus no DSP cycles are wasted to execute the control tasks. The ARM926 acts as the SoC controller, handling all control tasks such as protocol stacks, memory management, RTOS and drivers.

PHY and lower MAC benchmarks have shown that the STW51000 supports one of the industry's highest voice and data channel density. Two STW51000 can handle as many as 16 High-Speed Downlink Packet Access users sharing a 14.4Mbps throughput, while a single- device implementation can address up to two-carrier GSM/EDGE and a complete WiMAX 802.6e 10MHz PHY, set up in the Time-Division-Duplexing mode.

STW51000 samples, evaluation boards and tools, as well as optimized software libraries are already available. Delivered in the PBGA 569 package, the device costs $50 in volume.




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