| 引用本文: | 何峰,袁继兵,丁宏,等.一种新的Kronecker扩频码在盲多用户检测中的应用.[J].国防科技大学学报,2011,33(4):92-96.[点击复制] |
| HE Feng,YUAN Jibing,DING Hong,et al.A Novel Blind Multiuser Detection Scheme with Kronecker Spreading Code[J].Journal of National University of Defense Technology,2011,33(4):92-96[点击复制] |
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| 一种新的Kronecker扩频码在盲多用户检测中的应用 |
| 何峰, 袁继兵, 丁宏, 郑林华 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 当直接序列(DS-CDMA)系统中的多址干扰非常强时，自适应的盲多用户检测的性能将会严重下降。为了解决这一问题，一般的做法是增加系统的扩频增益，但是其取得的效果是有限的。本文将一种新的克罗内克(Kronecker)扩频序列应用到盲多用户检测中，该序列通过普通的扩频序列对自身作Kronecker乘积而生成。理论分析和仿真结果表明，Kronekcer扩频码和同样长度的普通扩频码相比，其抗多址干扰的能力要明显强于后者，在自适应盲多用户检测中的性能具有明显的优势。 |
| 关键词: 直接序列扩频系统 多址干扰 自适应盲多用户检测 Kronecker扩频码 |
| DOI： |
| 投稿日期：2010-11-16 |
| 基金项目: |
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| A Novel Blind Multiuser Detection Scheme with Kronecker Spreading Code |
| HE Feng, YUAN Jibing, DING Hong, ZHENG Linhua |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| When the multiple-access interference (MAI) in DS-CDMA system is very strong, the performance of adaptive blind multiuser detection in the system will degrade significantly. The normal way of solving this problem is increasing the length of spreading code. However, the improvement is limited. This study proposed a novel blind multiuser detection scheme with Kronecker spreading code, which is generated by the kronecker product of normal spreading code. Theoretical analysis and simulation show that the Kronecker spreading code has much more capability of resisting MAI than the normal spreading code, which has the same length of the Kronecker spreading code. Therefore, the Kronecker spreading code performs much better in the adaptive blind multiuser detection. |
| Keywords: DS-CDMA multiple-access interference adaptive blind multiuser detection kronecker spreading code |
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