一种ZF与SP结合的BLAST译码算法  

A New BLAST Decoding Algorithm Based on ZF and SP

作　　者：吴伟民[1] 付杰[1] 王德胜[1] 

机构地区：[1]武汉光电国家实验室光通信与智能网络研究部,湖北武汉430074

出　　处：《光学与光电技术》2009年第4期41-44,共4页Optics & Optoelectronic Technology

基　　金：国家自然科学基金(60802009);国家863面上资助项目(2008AA01Z204);国际科技合作计划(2008DFA11630);博士后基金(20070410279);湖北省自然科学基金(2007ABA008/2008CDB325)资助项目

摘　　要：多输入多输出虽能显著增加信道容量,但译码复杂度与精度一直是亟待解决的核心问题之一。将现有的贝尔实验室分层空时码检测迫零算法与球形译码算法充分结合,重点考察无线多输入多输出信道基本特征即信道条件数与信噪比,提出了一种自适应的贝尔实验室分层空时码解码算法,在保证误比特率性能的条件下,降低了系统的译码复杂度;为无线通信的长期演进研究奠定了良好基础。It is proved that the channel capacity is greatly improved by using MIMO technology, but the decoding complexity and precision are still the open and kernel problem. In this paper, the advantages and disadvantages for the different decoding algorithms, such as the famous ZF and SP algorithms, are analyzed. An adaptive BLAST decoding algorithm is proposed based on SNR and condition number, which can reduce the decoding complex under the condition of BER. The proposed algorithm may lay fundament for long-term-evolution for wireless communication.

关 键 词：球形译码 迫零算法 误码率 

分 类 号：TP301.5[自动化与计算机技术—计算机系统结构]