標題: CORDIC-based architecture with channel state information for OFDM baseband receiver
作者: Peng, CS
Chuang, YS
Wen, KA
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: OFDM;wireless LAN;CORDIC;channel state information
公開日期: 1-五月-2005
摘要: An efficient architecture for OFDM baseband receiver based on coordinate rotation digital computer (CORDIC) algorithm is proposed with channel state information (CSI). Two dual-mode CORDIC modules are designed for synchronization and equalization. A modified demapping method using CSI helps to provide sub-channel status, and therefore decreases packet error rates especially for some sub-channels with extremely low SNR. A combined algorithm suitable for CORDIC is proposed for not only estimate and compensation of channels but synchronization for carrier frequency offset and sampling. clock offset. Allocation, timing analysis and complexity for all functional blocks in the receiver are proposed, including front-end processing, FFT inner receiver, and outer receiver. Complete tests for packet error rate are simulated under an integrated platform considering of RF front-end non-ideal parameters, filters, quantization, and channel models. Simulation results Of practical circuits on AWGN and channel models are presented and prove the improvement of the receiver. The design occupies about 424k equivalent gate count and 7.3 mm(2) core size in 0.18 mu m CMOS.
URI: http://dx.doi.org/10.1109/TCE.2005.1467979
http://hdl.handle.net/11536/13747
ISSN: 0098-3063
DOI: 10.1109/TCE.2005.1467979
期刊: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
Volume: 51
Issue: 2
起始頁: 403
結束頁: 412
顯示於類別:期刊論文


文件中的檔案:

  1. 000230177900012.pdf