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PSK与QAM调制下多用户协同分集性能分析

Performance Analysis of Multi-user Cooperative Diversity under PSK and QAM
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摘要 介绍了协同分集技术与放大前传(Amplify and Forward,AF)和解码前传(Decode and Forward,DF)两种中继模式,把两用户协同推广至多用户协同,并通过仿真比较了PSK(Phase Shifting Keying)与QAM(Quadrature Amplitude Modulation)两种调制下的性能.结果表明:性能随着协同用户数的增加而提高;且QAM调制下系统性能优于PSK调制. Cooperative diversity is a new space diversity technique applied in wireless communication and multiple terminals construct a virtual Multiple-Input Multiple-Output （MIMO） system by sharing their antennas. This paper introduces a cooperative diversity technique, focusing on two models of Amplify and Forward （AF） and Decode and Forward （DF）. We study multi-user cooperation based on two users＇ cooperation and compare performance under QAM （Quadrature Amplitude Modulation） and PSK （Phase Shifting Keying） through simulation. Our simulation result shows that with the number of cooperative users increasing the performance will be improved and the same modulation order the QAM outperforms PSK.
作者 廖鹰梅
机构地区 西华师范大学计算机学院
出处 《常熟理工学院学报》 2010年第8期100-104,共5页 Journal of Changshu Institute of Technology
关键词 协同分集 多用户 QAM 仿真 cooperative diversity multi-user QAM （Quadrature Amplitude Modulation） simulation
分类号 TN92 [电子电信—通信与信息系统]
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参考文献6

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二级参考文献10

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共引文献6

常熟理工学院学报
2010年 第8期

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