WCDMA系统的变长均衡器

Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795) Pub Date : 2003-12-14 DOI:10.1109/ISSPIT.2003.1341131

Xusheng Wei, D. Cruickshank, B. Mulgrew

{"title":"WCDMA系统的变长均衡器","authors":"Xusheng Wei, D. Cruickshank, B. Mulgrew","doi":"10.1109/ISSPIT.2003.1341131","DOIUrl":null,"url":null,"abstract":"In the downlink of synchronous CDMA, the orthogonality of spreading codes will be ruined by the frequency selective multipath channel. Losing of orthogonality causes the multiple access interference (MAI). To suppress the MAI, linear equalizers were proposed which can partially restore the orthogonality of spreading codes before dispreading. In this paper, a new adaptive equalizer using the least mean square (LMS) algorithm was proposed which can adjust its length according to the condition of the propagation channel. The simulation results show that the performance of the new equalizer is significantly better than that of the conventional RAKE receiver.","PeriodicalId":332887,"journal":{"name":"Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2003-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Varying length equalizer for WCDMA system\",\"authors\":\"Xusheng Wei, D. Cruickshank, B. Mulgrew\",\"doi\":\"10.1109/ISSPIT.2003.1341131\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the downlink of synchronous CDMA, the orthogonality of spreading codes will be ruined by the frequency selective multipath channel. Losing of orthogonality causes the multiple access interference (MAI). To suppress the MAI, linear equalizers were proposed which can partially restore the orthogonality of spreading codes before dispreading. In this paper, a new adaptive equalizer using the least mean square (LMS) algorithm was proposed which can adjust its length according to the condition of the propagation channel. The simulation results show that the performance of the new equalizer is significantly better than that of the conventional RAKE receiver.\",\"PeriodicalId\":332887,\"journal\":{\"name\":\"Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)\",\"volume\":\"94 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-12-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSPIT.2003.1341131\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSPIT.2003.1341131","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

摘要

在同步CDMA下行链路中，频率选择性多径信道会破坏扩频码的正交性。正交性的丧失会引起多址干扰。为了抑制MAI，提出了线性均衡器，该均衡器可以部分恢复扩频码在扩频前的正交性。本文提出了一种基于最小均方算法的自适应均衡器，该均衡器可以根据传播信道的情况调整其长度。仿真结果表明，该均衡器的性能明显优于传统的RAKE接收机。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Varying length equalizer for WCDMA system

In the downlink of synchronous CDMA, the orthogonality of spreading codes will be ruined by the frequency selective multipath channel. Losing of orthogonality causes the multiple access interference (MAI). To suppress the MAI, linear equalizers were proposed which can partially restore the orthogonality of spreading codes before dispreading. In this paper, a new adaptive equalizer using the least mean square (LMS) algorithm was proposed which can adjust its length according to the condition of the propagation channel. The simulation results show that the performance of the new equalizer is significantly better than that of the conventional RAKE receiver.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)

自引率

0.00%

发文量