低復(fù)雜度的分組檢測(cè)空時(shí)接收機(jī)
The Low Complexity of Group Detecting Layered Space-Time Receiver
-
摘要: V-BLAST接收機(jī)是提高無線通信系統(tǒng)傳輸數(shù)率的有效技術(shù)，但由于該算法存在大量的求偽逆、迫零和排序，算法的復(fù)雜度高，限制了它在實(shí)際中的應(yīng)用；線性迫零(ZF)接收機(jī)和最小均方誤差(MMSE)接收機(jī)復(fù)雜度低，但性能差。該文提出了一種分組檢測(cè)空時(shí)接收機(jī)，組內(nèi)采用串行干擾抵消接收，與V-BLAST接收機(jī)相比，降低了算法的復(fù)雜度。仿真結(jié)果表明：所提出的基于MMSE準(zhǔn)則下的分組檢測(cè)空時(shí)接收機(jī)的性能明顯好于基于迫零準(zhǔn)則的 V-BLAST接收機(jī)。
-
關(guān)鍵詞:
- 無線通信; 多輸入多輸出; 分層空時(shí)編碼;V-BLAST
Abstract: V-BLAST receiver is effective technique in achieving high data rate in wireless communications. However, the complexity of V-BLAST is very high because much time must be consumed in performing linear nulling, successive interference canceling and sorting, and the application of V-BLAST is limited. The complexity of the ZF receiver and MMSE receiver is low, but performance is worse than V-BLAST. In this paper, a new layered space-time receiver is proposed using two stage successive interference canceling, and the complexity of new scheme is very low compared with the V-BLAST. The simulation results indicate that the performance of the proposed receiver based on MMSE is outperforms ZF V-BLAST receiver. -
Foschin G J. Layered space-time architecture for wireless communication in a fading environment when using multiple antennas[J]. Bell labs Technical Jurnal, 1966, 1(2): 41-59.[2]Wolniansky P W, Foschini G J, Golden G D, et al.. V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel [J]. IEEE ISSSE, USA, IEEE press, 1998: 230-235.[3]Golden G D, Foschini G J, et al.. Detection algorithm and initial laboratory results using V-BLAST space-time communication architecture [J].Electronics Letter.1999, 35(1):14-16[4]Sellathurai M, Haykin S. A simplified diagonal blast architecture with iterative parallel-interference cancellation receivers. IEEE international conference on Communications, Helsinki, Finland, 2001, vol.10: 3067-3071.[5]陶小峰, 俞追專, 秦海燕, 張平. V-BLAST 的并行譯碼. 電子學(xué)報(bào), 2003, 31(7): 990-993. -
計(jì)量
- 文章訪問數(shù): 2153
- HTML全文瀏覽量: 105
- PDF下載量: 868
- 被引次數(shù): 0
下載:
