| cdma2000系统中导频干扰抵消方案研究 |
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| 引用本文： | 陈玉,尤肖虎. cdma2000系统中导频干扰抵消方案研究[J]. 电子学报, 2003, 31(10): 1565-1567 |
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| 作者姓名： | 陈玉 尤肖虎 |
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| 作者单位： | 东南大学 移动通信国家重点实验室,江苏南京 210096 |
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| 基金项目： | 国家杰出青年基金项目CNSF(6972 50 0 1 )，江苏东大通信技术有限责任公司 (SeuComm)资助 |
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| 摘 要： | 本文介绍了cdma2000系统中计算和消除导频信号干扰的一种有效方法,并将其应用于单个和多个蜂窝小区的环境中.仿真结果表明,采用本方法的RAKE接收机既可以保证信道估计的精度,合并接收到的多径信号;又可以有效地消除由导频信号所引入的多址干扰,使得系统性能得到较大程度的提高.同时,符号速率上的导频干扰抵消运算大大降低了实际系统中硬件实现时的复杂度.
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| 关 键 词： | 导频干扰抵消 RAKE接收机 cdma2000 |
| 文章编号： | 0372-2112(2003)10-1565-03 |
| 收稿时间： | 2002-03-13 |
A Pilot Cancellation Scheme for cdma2000 Systems |
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| CHEN Yu,YOU Xiao hu. A Pilot Cancellation Scheme for cdma2000 Systems[J]. Acta Electronica Sinica, 2003, 31(10): 1565-1567 |
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| Authors: | CHEN Yu YOU Xiao hu |
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| Affiliation: | National Mobile Communications Research Laboratory,Southeast University,Nanjing Jiangsu 210096,China |
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| Abstract: | An effective method of calculating and eliminating the multiple access interference (MAI) introduced by the pilot signal in cdma2000 systems is presented in this paper.Its applications to single cell and multi cell environments are also described.Computer simulations show that the RAKE receiver with the proposed pilot cancellation scheme can not only ensure the accuracy of channel estimation and combine separable multi path components but also effectively eliminate the MAI due to the pilot signal.So the system performance is greatly improved.Besides,pilot cancellation at symbol rate leads to relatively low hardware complexity in its implementation for practical systems. |
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| Keywords: | pilot cancellation RAKE receiver cdma2000 |
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