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[ "李光球,男,博士,杭州电子科技大学教授,主要研究方向为无线通信、信息论与编码,已主持完成3 项国家自然科学基金项目和2 项省部级基金项目,发表学术论文90余篇。" ]
[ "董家云,男,杭州电子科技大学硕士生,主要研究方向为无线通信。" ]
网络出版日期:2015-08,
纸质出版日期:2015-08-20
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李光球, 董家云. Nakagami衰落上DE-QPSK在联合收发分集下的性能分析[J]. 电信科学, 2015,31(8):72-77.
Guangqiu Li, Jiayun Dong. Performance Analysis of DE-QPSK with Joint Transmit and Receive Diversity in Nakagami Fading[J]. Telecommunications science, 2015, 31(8): 72-77.
李光球, 董家云. Nakagami衰落上DE-QPSK在联合收发分集下的性能分析[J]. 电信科学, 2015,31(8):72-77. DOI: 10.11959/j.issn.1000-0801.2015209.
Guangqiu Li, Jiayun Dong. Performance Analysis of DE-QPSK with Joint Transmit and Receive Diversity in Nakagami Fading[J]. Telecommunications science, 2015, 31(8): 72-77. DOI: 10.11959/j.issn.1000-0801.2015209.
利用高斯Q函数的高阶次幂在最大比合并(MRC)分集接收瑞利衰落信道上统计平均的结果,推导了Nakagami 衰落信道上采用组合发射选择合并(SC)/接收 MRC 天线分集的相干检测差分编码四相相移键控(DE-QPSK)的平均误符号率(ASER)精确表达式。利用高斯Q函数的近似表达式和矩生成函数(MGF)方法,推导了Nakagami衰落信道上采用组合SC/MRC天线分集的相干检测DE-QPSK 的ASER近似表达式。通过数值计算和仿真,验证了DE-QPSK的ASER精确表达式的正确性以及近似表达式的准确性。利用精确表达式和近似表达式可研究收发天线数目和衰落参数对DE-QPSK的ASER性能的影响,为实际SC/MRC天线分集方案的设计提供了理论指导。
By using the statistical average results of higher-order powers of Gaussian Q-function in multi-branch diversity reception with maximum ratio combining(MRC)in Rayleigh fading channel,exact closed-form for the average symbol error rate(ASER)of differentially encoded quadri-phase shift keying(DE-QPSK)using coherent detection with transmit selection combining(SC)and receive MRC(SC/MRC)in Nakagami fading channels was derived.Approximate closed-form for the ASER of DE-QPSK with SC/MRC in Nakagami fading channels was derived by using the approximate expression of Gaussian Q-function and moment generating function based analysis approach.Numerical and simulation results show that the theoretical analysis of the ASER of DE-QPSK is exact and the approximate closed-form for the ASER of DE-QPSK is accurate.The above results can be used to design SC/MRC antenna diversity systems with DE-QPSK.
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