Performance analysis of switched diversity combining receiving system under n-Rayleigh fading channels

Computer Engineering and Applications ›› 2015, Vol. 51 ›› Issue (8): 1-5.

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Performance analysis of switched diversity combining receiving system under n-Rayleigh fading channels

XU Lingwei1, ZHANG Hao1，2, LV Tingting1, SHI Wei3, GULLIVER T A2

1.School of Information Science and Engineering, Ocean University of China, Qingdao, Shandong 266100, China
2.School of Electrical and Computer Engineering, University of Victoria, Victoria V8W 3P6, Canada
3.School of Information Science and Technology, Qingdao University of Science & Technology, Qingdao, Shandong 266061, China

Online:2015-04-15 Published:2015-04-29

SDC接收系统在n-Rayleigh信道下的性能分析

徐凌伟1，张浩1，2，吕婷婷1，施威3，Gulliver T A2

1.中国海洋大学信息科学与工程学院，山东青岛 266100
2.加拿大维多利亚大学电子与计算机工程学院，维多利亚 V8W 3P6
3.青岛科技大学信息科学与技术学院，山东青岛 266061

Abstract

Abstract: The Average Symbol Error Probability（ASEP） and Outage Probability（OP） of the Switched Diversity Combining（SDC） receiving system under n-Rayleigh fading channels are investigated in this paper. Based on the method of the Probability Density Function（PDF） of the Signal-to-Noise Ratio（SNR）, the exact and approximate expressions of the ASEP are derived for several q-ary modulation schemes, including Phase Shift Keying modulation （PSK）, and Pulse Amplitude Modulation（PAM）. The exact closed form expressions of OP are also presented. Then the ASEP and OP performance under different conditions is evaluated through numerical simulations, and the accuracy of the analytical results is verified. The simulation results show that the diversity branches L, the fading factor n, and the switching threshold [rth] have an important influence on the ASEP and OP performance.

Key words: switched diversity combining, n-Rayleigh fading channels, probability density function, average symbol error probability, outage probability

摘要： 在n-Rayleigh信道下，研究了切换合并接收系统的平均符号误码率和中断概率性能。基于信噪比的概率密度函数的方法，推导了切换合并接收系统在n-Rayleigh衰落信道上采用q进制相移键控调制，和脉冲幅度调制的平均符号误码率的精确和近似表达式。同时，也得到了中断概率的精确闭合表达式。对不同系统条件下的平均符号误码率和中断概率性能做了数值仿真，验证了理论分析结果的正确性。仿真结果表明：分集支路数L，衰弱因子n，以及切换门限[rth]对系统的平均符号误码率和中断概率性能有着重要的影响。

关键词: 切换合并, n-Rayleigh信道, 概率密度函数, 平均符号误码率, 中断概率

XU Lingwei1, ZHANG Hao1，2, LV Tingting1, SHI Wei3, GULLIVER T A2. Performance analysis of switched diversity combining receiving system under n-Rayleigh fading channels[J]. Computer Engineering and Applications, 2015, 51(8): 1-5.

徐凌伟1，张浩1，2，吕婷婷1，施威3，Gulliver T A2. SDC接收系统在n-Rayleigh信道下的性能分析[J]. 计算机工程与应用, 2015, 51(8): 1-5.

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Performance analysis of switched diversity combining receiving system under n-Rayleigh fading channels

SDC接收系统在n-Rayleigh信道下的性能分析

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