信道预测和联合收发分集的RQAM误符号率性能分析  

Symbol Error Rate Performance Analysis of RQAM with Channel Prediction and Joint Transceiver Diversity

作　　者：李得兵 李光球[1] 金徐凤 

机构地区：[1]杭州电子科技大学通信工程学院,杭州310018

出　　处：《计算机工程》2018年第1期121-127,共7页Computer Engineering

基　　金：浙江省自然科学基金(LY12F01008);浙江省新苗科技计划项目(2013R407039)

摘　　要：为解决采用最小均方误差维纳信道预测的发射天线选择(TASP)/接收天线最大比合并(MRC)的无线通信系统设计问题,利用矩生成函数法和高斯Q函数的近似表达式,分别推导了时间选择性瑞利块衰落信道上矩形正交幅度调制(RQAM)和差分编码四相相移键控(DE-QPSK)的平均误符号率(ASER)的精确及近似表达式。数值计算和仿真结果证明了RQAM与DE-QPSK的ASER精确分析的正确性和近似分析的准确性,从而可以快速地确定收发天线数、信道预测器参数以及各种信道参数等对TASP/MRC系统ASER性能的影响。In order to solve the design problem of predictive Transmit Antenna Selection （TASP）/receive antenna Maximum Ratio Combining （MRC） wireless communication system with the Minimum Mean Square Error （MMSE） Wiener channel prediction,the exact and approximate expressions for the Average Symbol Error Rate （ASER） of the Rectangular Quadrature Amplitude Modulation （RQAM） and Differentially Encoded Quadri-Phase Shift Keying （DE- QPSK） are derived by using moment generating function method and approximate expression of Gaussian Q-function, respectively over time-selective Rayleigh block fading channel. The numerical and simulation results verify that the exact and the approximate ASER analysis of RQAM and DE-QPSK is correct and accurate. The obtained exact and approximate expressions for the ASER of RQAM and DE-QPSK modulation can be used to evaluate the impact of transceiver antenna number,channel predictor parameters and various channel parameters on the ASER performance.

关 键 词：瑞利块衰落信道 最小均方误差 维纳信道预测器 发射天线选择 最大比合并 矩形正交幅度调制 平均误符号率 

分 类 号：TN911.3[电子电信—通信与信息系统]