大气激光通信中垂直分层空时码的研究与实现

Research and realization of V-BLAST in atmosphere laser communications

针对垂直分层空时(V-BLAST)码存在译码复杂度高、误码性能不理想等不足,本文将串行干扰消除(SIC)算法应用于V-BLAST码的译码中,提出了一种适合于大气激光通信的分层空时(LST)编码方案。采用仿真分析和硬件实验相结合的方法,验证了本文方案的正确性和合理性。实验结果证明了在大气激光通信中采用基于SIC算法的V-BLAST编码的可行性,为进一步提高通信的传输速率、改善系统性能提供了新方法和依据。

Vertical bell labs layered space-time （V-BLAST） code can greatly improve the transmission speed rate of atmosphere laser communication systems, but it gives a rise to decoding complexity and bit error rate simultaneously. Therefore, a V-BLAST code scheme using serial interference cancellation （SIC） algorithm is proposed for atmospheric laser communication systems. Furthermore, computer simulation and hardware tests are implemented to confirm its feasibility and rationality. The results demonstrate that using SIC decoding algorithm, the V-BLAST code in atmospheric laser communication system is achievable. And it provides a new way to system performance improvement.