摘要
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。
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.
出处
《电波科学学报》
EI
CSCD
北大核心
2007年第2期187-190,250,共5页
Chinese Journal of Radio Science
基金
浙江省自然科学基金项目(R105473)
浙江省教育厅重点科研项目(20060268)
关键词
NAKAGAMI衰落信道
最大比合并
选择合并
天线分集
错误概率
Nakagami fading channels, maximum-ratio combing(MRC), selection combing (SC), antenna diversity, error probability
作者简介
李光球(1966-),男,安徽人,博士,教授,浙江省高校中青年学术带头人,中国电子学会高级会员。已主持完成2项国家自然科学基金项目和2项省部级基金项目,作为主要成员参与完成国家级重点项目2项,发表学术论文60多篇。研究领域:无线通信,信息论与编码。gqli@mail.hz.zi.cn