| 过饱和多址系统中部分相干多用户信码/相位最佳联合检测 |
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| 引用本文： | 毕见鑫,田红心,易克初.过饱和多址系统中部分相干多用户信码/相位最佳联合检测[J].电子学报,2001,29(1):9-13. |
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| 作者姓名： | 毕见鑫 田红心 易克初 |
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| 作者单位： | 西安电子科技大学综合业务网国家重点实验室,西安 710071 |
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| 基金项目： | 国家自然科学基金!(No .69872 0 2 7) |
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| 摘 要： | 本文主要研究了过饱和多址系统中低复杂度部分相干多用户信码/相位最佳联合检测的问题.本文首先基于最大后验概率准则从理论上推导出了部分相干多用户信码/相位联合估计子的表达式;然后给出了低复杂度最佳联合检测算法用以计算此估计子,而且该算法适用于具有二维星座的线性调制方式;同时通过计算机仿真分析了该接收机的误码性能及相位提取误差等有关问题,并与相干、非相干解调两种情况作了比较,得出了一些有益的结论.
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| 关 键 词： | 过饱和多址通信 部分相干检测 相位偏差 |
| 文章编号： | 0372-2112(2001)01-0009-05 |
| 收稿时间： | 1999-09-14 |
Partially Coherent Multiuser Weight/Phase Optimal Joint Detection in Over-Saturated MA Communication |
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| BI Jian-xin,TIAN Hong-xin,YI Ke-chu.Partially Coherent Multiuser Weight/Phase Optimal Joint Detection in Over-Saturated MA Communication[J].Acta Electronica Sinica,2001,29(1):9-13. |
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| Authors: | BI Jian-xin TIAN Hong-xin YI Ke-chu |
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| Institution: | The National Key Lab.on ISN in Xidian University,Xi'an 710071,China |
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| Abstract: | This paper explores the problem of partially coherent multi user weight/phase optimal joint detection in over saturated multiple access communication.Firstly,based on maximum a posteriori criterion,partially coherent multi user weight/phase estimator is given via theoretical analysis.Then,we present the low complexity partially coherent multi user weight/phase optimal joint detection algorithm which is applicable to linear modulation methods with two dimensional constellation.Finally,we analyze the performance of the receiver and the phase estimated error via computer simulation and make comparison with coherent and non coherent detection.Some useful conclusions are drawn. |
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| Keywords: | over saturated multiple access communication(OSMA) partially coherent detection phase offset |
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