| 多载波DS CDMA并行干扰消除算法分析 |
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| 引用本文： | 张援农,徐国雄,黄天锡.多载波DS CDMA并行干扰消除算法分析[J].华中科技大学学报(自然科学版),2005,33(6):47-50. |
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| 作者姓名： | 张援农 徐国雄 黄天锡 |
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| 作者单位： | 1. 武汉大学,电子信息学院,湖北,武汉,430079
2. 中原工学院,电子信息学院,河南,郑州,450007 |
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| 摘 要： | 将频率分集合并技术与并行干扰抵消算法相结合，提出了多载波DSCDMA系统的并行干扰消除算法(FDC-PIC)，并对这一算法的误码性能进行了计算机仿真．结果表明：FDC-PIC获得了明显优于相关接收的性能，且随着干扰消除级的增加，系统性能将得到进一步地改善，其中最初2级的干扰消除可获得最大的性能改善，但到第3级干扰消除，性能不再有明显的改善，表明2级FDC-PIC具有最佳的性能／复杂度．仿真结果表明：在具有相同干扰消除级数的情况下，基于软判决反馈的FDC-PIC性能上总优于硬判决反馈FDC-GPIC。
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| 关 键 词： | 多载波 直接序列码分多址 并行干扰消除 |
| 文章编号： | 1671-4512(2005)06-0047-04 |
| 修稿时间： | 2004年4月23日 |
Parallel interference-cancellation algorithm for multi-carrier DS CDMA |
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| Zhang Yuannong,Xu Guoxiong,Huang Tianxi.Parallel interference-cancellation algorithm for multi-carrier DS CDMA[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2005,33(6):47-50. |
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| Authors: | Zhang Yuannong Xu Guoxiong Huang Tianxi |
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| Institution: | Zhang Yuannong Xu Guoxiong Huang Tianxi Zhang Yuannong Assoc. Prof., School of Electronic Information,Wuhan University,Wuhan 430079,China. |
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| Abstract: | Parallel interference cancellation was proposed for multi-carrier DS CDMA (which is termed FDC-PIC) by integrating frequency diversity combining with parallel interference canceling method. It was seen that the performance of FDC-PIC is superior to correlation reception of multi-carrier DS CDMA. With an increase in interference-canceling stages, the system showed its good performance further, especially in the initial second stage, but did a poor performance in the 3rd stage. Namely, 2-stage FDC-PIC showed its best performance/complexity trade-off. The simulation results also indicated that FDC-PIC with soft decision feed back outperforms the system with hard decision one when the stage numbers are the same. |
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| Keywords: | multi-carrier DS CDMA parallel interference cancellation |
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