| 基于PIC的MC-CDMA系统多级检测技术分析 |
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| 引用本文： | 薛波,颜彪,杨娟,李鸣. 基于PIC的MC-CDMA系统多级检测技术分析[J]. 扬州大学学报(自然科学版), 2005, 8(3): 46-49 |
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| 作者姓名： | 薛波 颜彪 杨娟 李鸣 |
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| 作者单位： | 扬州大学,信息工程学院,江苏,扬州,225009 |
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| 基金项目： | 江苏省教育厅留学归国人员基金资助项目 |
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| 摘 要： | 分析了M C-CDM A系统的基本原理,提出了基于并行干扰抵消(P IC)的多级检测技术改进方案.该方案以一种改进的ORC(EORC)获得初始数据估计,且后续各级采用EGC技术.计算机仿真结果表明:与传统多级检测相比,改进方案经过一级P IC之后即可达到MM SE的性能;随着级数的增加,系统性能改善越来越小.在算法性能与复杂度之间折中考虑,三级P IC是比较实用的一种检测方案.
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| 关 键 词： | MC-CDMA 多级检测 正交恢复性合并(ORC) 并行干扰抵消(PIC) |
| 文章编号： | 1007-824X（2005）03-0046-04 |
| 收稿时间： | 2004-12-30 |
| 修稿时间： | 2004-12-30 |
Analysis of multi-stage detection based on PIC in MC-CDMA systems |
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| XUE Bo,YAN Biao,YANG Juan,LI Ming. Analysis of multi-stage detection based on PIC in MC-CDMA systems[J]. Journal of Yangzhou University(Natural Science Edition), 2005, 8(3): 46-49 |
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| Authors: | XUE Bo YAN Biao YANG Juan LI Ming |
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| Abstract: | The basic principle of MC-CDMA systems is analyzed,and an improved scheme of multi-stage detection(MSD) based on parallel interference cancellation (PIC) is proposed.To get initial data estimation,the scheme adopts a new enhanced ORC(EORC),and EGC is used in the successive stages.The simulation results show that the improved scheme can get the performance of MMSE only after one PIC stage,the improvement of performance becomes less and less as the number of stage rises,three stages PIC is a better tradeoff between the performance and computational complexity. |
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| Keywords: | MC-CDMA multi-stage detection(MSD) orthogonality restoring combining(ORC) parallel interference cancellation(PIC) |
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