| WCDMA系统中基于级间最大比合并的MPIC算法 |
| |
| 引用本文： | 杨海斌,赵明,许希斌. WCDMA系统中基于级间最大比合并的MPIC算法[J]. 清华大学学报(自然科学版), 2004, 44(6): 843-846 |
| |
| 作者姓名： | 杨海斌 赵明 许希斌 |
| |
| 作者单位： | 清华大学,电子工程系,北京,100084 |
| |
| 基金项目： | 国家自然科学基金资助项目 ( 90 2 0 40 0 1) |
| |
| 摘 要： | 为了抑制多径衰落造成的符号间干扰 ,提高宽带码分多址 (WCDMA)系统的吞吐量 ,提出了一种多径干扰消除(MPIC)算法。在对原有的 MPIC算法性能进行理论分析的基础上 ,提出了对相邻的两级迭代输出再进行最大比合并 ,可以得到最佳的分集增益 ,因而具有比传统的 MPIC更强的多径干扰抑制效果。仿真结果表明 ,这种基于级间最大比合并的 MPIC算法 (MRC- MPIC)的误比特率明显优于传统的MPIC算法。当输入信噪比好于 15 d B时 ,级间最大比合并带来的系统性能增益在 3d B以上
|
| 关 键 词： | 移动通讯 宽带码分多址 多径干扰消除 最大比合并 |
| 文章编号： | 1000-0054(2004)06-0843-04 |
| 修稿时间： | 2003-10-27 |
Multipath interference cancellation using inter-stage maximum ratio combining for WCDMA systems |
| |
| YANG Haibin,ZHAO Ming,XU Xibin. Multipath interference cancellation using inter-stage maximum ratio combining for WCDMA systems[J]. Journal of Tsinghua University(Science and Technology), 2004, 44(6): 843-846 |
| |
| Authors: | YANG Haibin ZHAO Ming XU Xibin |
| |
| Abstract: | A novel multipath interference cancellation (MPIC) algorithm was developed to suppress the inter-symbol interference caused by multipath fading and to increase the throughput of wideband code division multiple access (WCDMA) systems. A theoretical analysis of the conventional MPIC algorithm show that the maximum-ratio combining of two successive stages' outputs offers the optimal diversity gain with higher suppression of the multipath interference than the conventional MPIC. Simulation results show that the bit-error-rate of this MPIC using inter-stage maximum-ratio combining (MRC-MPIC) is much better than that of the conventional MPIC. Inter-stage maximum-ratio combining can yield a performance gain higher than 3 dB when the input signal-to-noise ratio is above 15 dB. |
| |
| Keywords: | mobile communication wideband code division multiple access (WCDMA) multipath interference cancellation (MPIC) maximum ratio combining |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
