提出了一种应用于垂直-贝尔实验室分层空时码(V-BLAST)系统的新的排序检测算法.该算法利用新的排序方法和施密特正交化分解算法进行信号的检测,降低了检测算法的复杂度,并将排序与数据检测分离,提高了算法应用的灵活性.分析结果表明,该算法运算复杂度仅为传统的排序迫零干扰删除算法(ZF-SIC)的1/3~3/4,且理论与仿真结果证明新方法性能与传统的ZF-SIC误码率(BER)性能相同.因此,新算法有利于硬件系统的集成实现,达到了降低硬件实现难度和成本的目的.
A new ordering method and detection algorithm based on the Schmidt decomposition for the muhiple-input muhiple-output (MIMO) system are proposed. The algorithm can achieve the same bit error rate (BER) performance as the traditional zero forcing serial interference cancellation (ZF-SIC) algorithm while the computational complexity of the proposed algorithm is 1/3 to 2/3 to the traditional ZF-SIC algorithm. Analysis and computer simulation are also presented to verify the algorithm.