| 多码CDMA系统中联合并行干扰抵消与迭代信道估计方法 |
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| 引用本文： | 赵军辉,李秀萍,王东明,尤肖虎.多码CDMA系统中联合并行干扰抵消与迭代信道估计方法[J].电路与系统学报,2004,9(6):143-147. |
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| 作者姓名： | 赵军辉 李秀萍 王东明 尤肖虎 |
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| 作者单位： | 1. 东南大学,移动通信国家重点实验室,江苏,南京,210096
2. 北京邮电大学,电信工程学院,电磁场理论与应用国际开放实验室,北京,100876 |
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| 基金项目： | 863 基金资助项目(2001AA123015)，东大通信技术公司基金资助项目 |
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| 摘 要： | 本文针对多码CDMA系统提出了一种联合并行干扰抵消与迭代信道估计方法。该方法首先通过导频符号对信道进行估计，然后使用RAKE接收机后的软信息对信道参数进行修正，最后通过并行干扰抵消(PIC)去除多码干扰(MCI)。仿真结果表明，经过多次迭代后，该方法可显著地降低多码CDMA系统的误比特率平台。本文同时还给出了信道估计质量、码道数和PIC次数对多码CDMA系统性能的影响。
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| 关 键 词： | 多码CDMA 迭代信道估计 并行干扰抵消 |
| 文章编号： | 1007-0249(2004)06-0143-05 |
| 修稿时间： | 2002年12月3日 |
Joint parallel interference cancellation and iterative channel estimation method in multicode CDMA system |
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| ZHAO Jun-hui,LI Xiu-ping,WANG Dong-ming,YOU Xiao-hu.Joint parallel interference cancellation and iterative channel estimation method in multicode CDMA system[J].Journal of Circuits and Systems,2004,9(6):143-147. |
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| Authors: | ZHAO Jun-hui LI Xiu-ping WANG Dong-ming YOU Xiao-hu |
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| Affiliation: | ZHAO Jun-hui1,LI Xiu-ping2,WANG Dong-ming1,YOU Xiao-hu1 |
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| Abstract: | A joint parallel interference cancellation (PIC) and iterative channel estimation method for multicode CDMA system is proposed. Channel parameters are firstly estimated with the aid of pilot symbols, and then is refined by using soft information from data symbol after rake receiver. Parallel interference cancellation (PIC) is adopted to eliminate multicode interference (MCI). Simulation Results show that the error floor of the system can be reduced significantly. The effects of different parameter on the bit error ratio (BER) performance of the multicode CDMA, such as the quality of channel estimation, PIC cancellation factor and the number of cancellation, are also investigated. |
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| Keywords: | multicode CDMA iterative channel estimation parallel interference cancellation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
