摘要
推导了采用垂直贝尔实验室分层空时(V-BLAST,Vertical-Bell Laboratories Layered Space-Time)结构的多天线(MIMO,Multiple Input and Multiple Out-put)系统中一种改进的软判决球译码(SD,Sphere-decoding)算法。结合LDPC码,仿真验证了该算法的性能与复杂度并与一种经典算法的性能及复杂度进行了比较。结果表明,合理选择参数,改进算法的计算复杂度可低于经典算法的计算复杂度,而其性能接近经典算法的性能。
A modified soft-decision sphere-decoding algorithm based on probability computation is deduced for the V-BLAST architecture MIMO system. The system bit error performance and computation complexity are simulated and compared with the tradition method. Simulation results demonstrate that the computation complexity is reduced with little performance loss.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第5期905-910,921,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目(No.90604035)
