| 多码DS／CDMA传输自适应系统的序列优化 |
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| 引用本文： | 何先刚 赵军丰 聂永萍 张忠培. 多码DS／CDMA传输自适应系统的序列优化[J]. 重庆邮电学院学报(自然科学版), 2003, 15(2): 45-49 |
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| 作者姓名： | 何先刚 赵军丰 聂永萍 张忠培 |
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| 作者单位： | [1]重庆邮电学院，重庆400065 [2]清华大学电子工程系，北京100084 |
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| 基金项目： | 国家自然科学基金资助项目 ( 6983 10 3 0 )，重庆邮电学院科技基金资助项目 ( A2 0 0 1- 3 3 ) |
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| 摘 要： | 为了优化多码DS／CDMA系统性能，提出了一种自适应序列优化及功率控制方法，通过优化系统扩频码设计，使系统能有效地克服多径多址干扰，降低系统传输功率。此方法中，为提高接收端用户的信号干扰噪声比(SINR)，提出了一种快速收敛的优化序列设计算法，通过优化发送扩频序列和接收解扩序列，降低了多址干扰，提高了多径分集增益；通过调整发射功率，使接收端达到设定服务质量要求，是一种有效的多码DS／CDMA传输自适应方法。
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| 关 键 词： | 多码DS／CDMA 传输自适应 序列优化 功率控制 信号干扰噪声比 第三代移动通信 |
Multicode DS/CDMA Systems Transmitter Adaptation Based on Optimal Sequence |
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| HE Xian-gang ,ZHAO Jun-feng,NIE Yong-ping ,ZHANG Zhong-pei. Multicode DS/CDMA Systems Transmitter Adaptation Based on Optimal Sequence[J]. Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition), 2003, 15(2): 45-49 |
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| Authors: | HE Xian-gang ZHAO Jun-feng NIE Yong-ping ZHANG Zhong-pei |
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| Affiliation: | HE Xian-gang 1,ZHAO Jun-feng,NIE Yong-ping 1,ZHANG Zhong-pei 2 |
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| Abstract: | To improve the performance of multicode DS/CDMA, an adaptation method of optimal sequence and power control is disussed in this paper, which can suppress multi-path and multi-access interference. In this method,a particular algorithm with high convergence and low calculation complexity is used.With the algorithm,good spread sequences and receiver despread sequences are obtained, which can maximize signal- interference-noise-rate(SINR), suppress multi-access interference, and get the multi-path diversity gain. Based on the optimal sequence and allocation transmitter power, the receiver SINR is improved and reaches the expected SINR, which satisfies the quality of servers in the system. |
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| Keywords: | mutlicode DS/CDMA power control optimal sequence adaptation transmitter |
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