| 非理想信道条件下的V-BLAST系统检测算法 |
| |
| 引用本文： | 郭明喜,沈越泓. 非理想信道条件下的V-BLAST系统检测算法[J]. 数据采集与处理, 2011, 26(3) |
| |
| 作者姓名： | 郭明喜 沈越泓 |
| |
| 作者单位： | 解放军理工大学通信工程学院,南京,210007 |
| |
| 基金项目： | 国家自然科学基金(60772083)资助项目 |
| |
| 摘 要： | 针对信道相关条件下同时存在信道估计误差的V-BLAST系统,提出了一种基于MMSE准则的检测算法,推导了接收均衡矩阵的计算式,同时也给出了相应的最佳排序策略。仿真结果表明,本文提出的算法比传统算法以及仅考虑信道估计误差影响的算法性能更优,当信噪比较高以及收发天线数目较多时,优势更明显。该算法要求接收端已知信道估计误差的方差以及收发天线之间的相关矩阵等参数信息,但系统性能对这些参数的估计值有较强的鲁棒性,当参数估计不准确时,该算法性能优势仍然可以在一个较大的容错范围内得以保持。
|
| 关 键 词： | MIMO系统 最小均方误差 相关信道 信道估计误差 |
Detection Algorithm of V-BLAST System Under Imperfect Channel Condition |
| |
| Guo Mingxi,Shen Yuehong. Detection Algorithm of V-BLAST System Under Imperfect Channel Condition[J]. Journal of Data Acquisition & Processing, 2011, 26(3) |
| |
| Authors: | Guo Mingxi Shen Yuehong |
| |
| Affiliation: | Guo Mingxi,Shen Yuehong(Institute of Communication Engineering,PLA University of Science and Technology,Nanjing,210007,China) |
| |
| Abstract: | A detection algorithm based on minimum mean square error MMSE criterion is proposed for V-BLAST system under correlated channels with channel estimation error.Expression of weight matrix is derived,and the ordering strategy is also provided.Simulation results show that the performance of the proposed scheme is superior to that of the conventional algorithm or the one only considering the effect of channel estimation error.The more the number of antennas is in high SNR region,the better advantage can be obta... |
| |
| Keywords: | MIMO system minimum mean-square error correlated channel channel estimation error |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
