基于DSM系统检测算法的研究

Research of Detection Algorithm Based on DSM System

为了满足无线通信对传输速率和可靠性具有较高的要求,同时克服现有多输入多输出(MIMO,Multiple Input Multiple Output)的缺陷。差分空间调制(DSM, Differential Space Modulation),作为一种全新的多天线传输技术,该技术可以提高传输速率,已成为下一代无线通信系统的重要方案。针对DSM检测算法复杂度进行研究,在此基础上提出了改进的D-MML(D-MML,M-algorithm to Maximum Likelihood in DSM)复杂度较低的检测算法。通过仿真表明,改进的D-MML检测算法能在保证误比特性能(BER, Bit Error Rate)的情况下,有效地降低信号检测计算的复杂度。

In order to meet the high transmission rate and reliability requirements of wireless communication, and overcome the existing multi-Input Multiple Output(MIMO, Multiple Input Multiple Output) defects. As a new multi-antenna transmission technology, Differential Space Modulation(DSM), which can improve the transmission rate, has become an important scheme of the next generation wireless communication system. Based on the study of the complexity of DSM detection algorithm, an improved D-MML(D-MML, M-algorithm to Maximum Likelihood in DSM)detection algorithm is proposed. Simulation results show that the improved D-MML detection algorithm can effectively reduce the complexity of signal detection calculation with guaranteed Ber(Bit Error Rate).