分布式STBC-OFDM交织深度优化

官鹭; 邵士海; 唐友喜

doi:10.3724/SP.J.1146.2010.00985

分布式STBC-OFDM交织深度优化

doi: 10.3724/SP.J.1146.2010.00985

基金项目:

国家自然科学基金(60902027, 60832007, 60901018)，基金项目(9140A21030209DZ02)，中央高校基本科研业务费专项资金(ZYGX2009J008, ZYGX2009J010)和国家863计划项目(2009AA01Z236)资助课题

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出版历程
- 收稿日期: 2010-09-10
- 修回日期: 2010-11-29
- 刊出日期: 2011-05-19

Optimal Interleaving Depth in STBC OFDM System with Distributed Transmit Antennas

摘要

摘要: 该文在分布式发射天线场景下，考虑多径瑞利衰落信道，针对每个天线上分别采用交织分组子载波功率扩展的STBC-OFDM链路，提出了一种交织深度优化方法：根据分布式信道的多径数和多径时延，以最小化成对错误概率上界为目标，设置交织子载波分组的交织深度。在两发一收STBC, BPSK调制，由M.1225步行测试信道A, B组成的分布式场景下仿真，结果表明：当误比特率为10-5时，与传统方法相比，该文方法有1.5 dB的功率节省。
- 无线通信 /
- 空时分组码(STBC) /
- 正交频分复用(OFDM) /
- 分布式天线系统 /
- 交织子载波分组
Abstract: Focusing on the STBC OFDM system where transmit power of data symbols are spreading on interleaving-grouped subcarriers of each distributed transmit antenna in Rayleigh fading channel, an optimal method for interleaving depth is proposed. According to the number of channel taps and the multi-path delays, the method searches the optimal interleaving depth to minimize the pair-wise error probability. Simulation results in distributed channel which is composed by M.1225 pedestrian test channel A and channel B show that the proposed algorithm has 1.5 dB gain at BER of 10-5 compared to conventional method using BPSK modulation in STBC system with two transmit antennas and one receive antenna.
- Wireless communication /
- Space Time Block Coding (STBC) /
- Orthogonal Frequency Division Multiplexing (OFDM) /
- Distributed antenna system /
- Interleaved subcarrier grouping

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参考文献(1)

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