一种基于光子计数的协作自由光通信技术

A Free Space Optical cooperative communications technology based on photon counting

摘要:

提出了一种基于光子计数的协作自由光通信技术。在自由光通信中，利用网络编码中继协作机制和光子计数技术，在保证系统性能良好的前提下，提高了系统抗衰落的能力。采用了交织多址接入方案，降低了多用户检测的复杂度。仿真结果表明，该系统能提供良好的传输性能，并且在衰落信道中，中继协作机制能够带来明显的空间分集增益。

Abstract:

A Free Space Optical(FSO) cooperative communications technology based on photon counting is proposed. The network-coding relay cooperative mechanism and photon counting technology are used to achieve the enhancement of anti-fading ability under the precondition of good system performance. And Interleaver Division Multiple Access(IDMA) is adopted as multiple access method to reduce the complexity of system. The simulation results show that this system can provide good transmission performance and the relay cooperative mechanism can bring considerable spatial diversity gain in the fading channel.