一种正交混合空时网络编码的中继通信算法

针对无线通信网络中频谱利用效率较低以及网络吞吐量不足等问题,提出一种正交混合空时网络编码的中继通信算法(QHNR)。该算法通过系统模型分析了在传输周期中的MAC阶段和BC阶段中的中继通信方式以及节点发送数据的出错率,采用分级增益的方法来提高信道利用效率,提升系统性能,并通过中继概率来选择较好的中继节点。通过网络吞吐量和网络功率分配情况来分析QHNR算法的性能。实验仿真结果表明,QHNR算法在提高网络吞吐量,提升信道利用效率上,相比采用TWR通信方案和MWR通信方案具有更好的效果。

Relay Communication Algorithm of Orthogonal Mixed Space-time Network Coding

Aiming at the problem of low spectral efficiency and insufficient network throughput in wireless communication network,a space-time quadrature hybrid relay communication network coding algorithm (QHNR) was proposed.The algorithm analyzes the relay communication mode on the MAC phase and BC phase during transmission cycle through the system model and the error rate while the nodes send data.The method of grading gain is used to improve channel utilization efficiency and promote the system performance,and then chooses the better relay nodes via relay probability.The performance of QHNR algorithm was analyzed by both network throughput and network power allocation.The experimental simulation results show that ,compared with the TWR communication scheme and MWR communication scheme,QHNR algorithm has better results in improving the network throughput and promoting channel utilization efficiency.