V-BLAST与Turbo码结合的系统性能研究
System Performances of V-BLAST Combined with Turbo Code
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摘要: 该文通过仿真研究了V-BLAST与Turbo码结合的系统性能。已有的V-BLAST处理算法与Turbo码的解码是分别进行的,这样在接收端Turbo码的译码器没有充分利用接收信号的软信息。通过将V-BLAST与Turbo码译码有机地结合起来,实现并不复杂,但性能却有明显的提高。
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关键词:
- V-BLAST; Turbo码; 软信息
Abstract: Through simulation this paper studies the performance of the system of V-BLAST combined with turbo code. The current methods process the V-BLAST algorithm and turbo decode algorithm independently. So it does not utilize the soft information of the received signal sufficiently. By simulation a novel method is presented. Through the combination of these two algorithms the complexity of the system realization does not increase, but the performance improves obviously. -
Wolniansky P W, Foschini G J, Golden G D, Valenzuela R A.V-BLAST: An architecture for realizing very high data rates over the rich-scattering wireless channel[C]. Proc. IEEE ISSSE, Pisa,Italy, 1998:230 - 235.[2]Foschini G J. Layered space-time architecture for wireless communication in a fading environment when using multiple antennas. Bell Laboratories Technical Journal, 1996,(2): 41 - 59.[3]Golden G D.[J].Foschini G J, Valenzuela R A, Wolniansky P W.V-BLAST: An architecture for realizing very high data rates over the rich-scattering wireless channel. Proc. 1998 Intl Symp. on Advanced Radio Techniques, Boulder, Colorado, Sept. 9.1998,11:-[4]Berrou C, Glavieux A, Thitimasjshima P. Near Shannon limit error-correcting coding and decoding: Turbo-codes(1). In Proc.,IEEE Int. Conf. on Communication, Geneva, Switzerland, May 1993: 1064- 1070. -
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