Nakagami衰落信道上组合SC/MRC的性能分析

研究Nakagami衰落信道上组合发射机选择合并(SC)/接收机最大比合并(MRC)天线分集系统的性能.使用矩生成函数方法,推导采用组合SC/MRC天线分集和相干检测的MPSK(M进制相移键控)、MQAM(M进制正交幅度调制)、MPAM(M进制脉冲幅度调制)、BFSK(二进制频移键控)、最小相关BFSK(BFSKmin)、差分编码BPSK(DE-BPSK)和预编码MSK(最小频移键控)等几种M进制数字调制方式在Nakagami衰落信道上的误符号率性能,获得了M进制数字调制系统误符号率性能的精确数学表达式.数值计算结果阐明了发射天线和接收天线数目以及衰落参数对数字调制系统误符号率性能的影响.

Performance analysis of combined transmit SC/Receive MRC in Nakagami fading channels

The error rate performance of combined antenna selection at the transmitter with maximum-ratio combining (MRC) at the receiver in Nakagami fading channels was investigated in this paper. By using the well-known moment generating function-based analysis approach, the closed-form solutions of the average symbol error probability for a general class of M-ary modulation schemes (including M-ary phase shift keying (MPSK), M-ary quadrature amplitude modulation (MQAM), M-ary pulse amplitude modulation (MPAM), binary frequency shift keying (BFSK), BFSK with minimum correlation (BFSKmin), differentially encoded BPSK (DE-BPSK), and precoded minimum shift keying (MSK)) with coherent detection were derived. Numerical results illustrate the effect of distributing the antennas over transmit and receive side and fading parameters on the average symbol error probability of digital modulation schemes.