| 基于最小峭度准则的码约束盲恒模干扰抑制算法 |
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| 引用本文： | 方红雨.基于最小峭度准则的码约束盲恒模干扰抑制算法[J].汕头大学学报(自然科学版),2007,22(3):56-60. |
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| 作者姓名： | 方红雨 |
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| 作者单位： | 安徽大学计算智能与信息处理教育部重点实验室,电子科学与技术学院,合肥,230039 |
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| 摘 要： | 提出一种基于最小峭度准则初始化的码约束盲恒模算法.通过对均衡器的权向量增加约束,使其在迭代更新最小化代价函数时,能有效地抑制干扰,同时保证DS-CDMA系统的期望用户信号不被抑制.仿真结果表明:在相同条件下,采用该算法得到的输出信噪比有明显的改善,输出的均方误差也大大减小.
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| 关 键 词： | 码分多址 盲多用户检测 最小峭度准则 码约束 恒模算法 |
| 文章编号： | 1001-4217（2007）03-0056-05 |
| 收稿时间： | 2007-06-18 |
| 修稿时间： | 2007-06-18 |
Blind Interference Suppression Using Code-Constrained Constant Modulus Algorithm Based on Minimum Kurtosis Criterion |
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| FANG Hong-yu.Blind Interference Suppression Using Code-Constrained Constant Modulus Algorithm Based on Minimum Kurtosis Criterion[J].Journal of Shantou University(Natural Science Edition),2007,22(3):56-60. |
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| Authors: | FANG Hong-yu |
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| Institution: | Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, School of Electronic Science and Technology, Anhui University, Hefei 230039, China |
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| Abstract: | A code-constrained Constant Modulus Algorithm(CMA) initialized by delay-hypothesized matched filter based on minimum kurtosis criterion is proposed in this paper.Code-constrained CMA imposes constraints on the equalization coefficients.It is ensured that the desired signals are not cancelled in DS-CDMA system in minimizing the constant modulus cost function to suppress interference.It is demonstrated by simulation results that the proposed algorithm has better performance in terms of lower mean squared error(MSE) and higher output signal to interference plus noise ratio(SINR). |
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| Keywords: | CDMA blind muhiuser detection minimum kurtosis criterion code-constraint constant modulus algorithm |
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