| 多径信道中的线性约束差分恒模算法 |
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| 引用本文： | 嵇建波,王卫东.多径信道中的线性约束差分恒模算法[J].桂林电子科技大学学报,2003,23(6):22-26. |
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| 作者姓名： | 嵇建波 王卫东 |
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| 作者单位： | 桂林电子工业学院,通信与信息工程系,广西,桂林,541004 |
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| 摘 要： | 针对线性恒模算法(LCCMA)和恒模算法(CMA)对目标用户能量大小、模参数值取定具有很强敏感性,由此提出一种新的盲自适应多用户检测算法(LCDCMA)。该算法能够有效抵消多址干扰和克服多径干扰,对目标用户能量任意大小和任意模参数选取都具有非常好的鲁棒性。而且算法的收敛性能和稳态性均优越于线性恒模算法和恒模算法,计算复杂度较低,特别适用于多径信道,是一种优秀的盲自适应算法,具有一定应用和研究价值。
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| 关 键 词： | 码分多址(CDMA) 多用户检测(MUD) 线性恒模算法(LCCMA) 差分恒模(DCM) |
| 文章编号： | 1001-7437(2003)06-22-04 |
| 修稿时间： | 2003年10月14 |
The Linearly Constrained Differential Constant Modulus Algorithm In Multipath Channel |
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| JI Jian-bo,WANG Wei-dong.The Linearly Constrained Differential Constant Modulus Algorithm In Multipath Channel[J].Journal of Guilin Institute of Electronic Technology,2003,23(6):22-26. |
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| Authors: | JI Jian-bo WANG Wei-dong |
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| Abstract: | In this paper,a new differential CMA algorithm which can be used in multipath channel is proposed.It can overcome the faults of LCCMA and CMA,which are very sensitivity to the energy of the desired user and the value of modulus. Simulation indicates that in all test situation,this algorithm is very robust for starting vectors and modulus, and has some practical value.especially in multipath environment. |
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| Keywords: | code eivision multiple access(CDMA) multiuser detection(MUD) LCCMA differential constant modulus algorithm(DCM) |
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