| WLAN OFDM系统中信道状态信息的提取及应用 |
| |
| 引用本文： | 江帆,陈丽恒,张力军.WLAN OFDM系统中信道状态信息的提取及应用[J].重庆邮电学院学报(自然科学版),2005,17(3):292-295. |
| |
| 作者姓名： | 江帆 陈丽恒 张力军 |
| |
| 作者单位： | 南京邮电学院,江苏南京210003 |
| |
| 摘 要： | 维特比算法是一种基于最大似然序列检测的方法，它从传输的比特序列检测出最可能的传输序列。在维特比译码器译码时，应用信道状态信息(CSI)，可以明显提高系统性能。我们建议的方法采用子载波的幅度平方|Hk|^2作为信道状态信息。通过采用IEEE802.11a OFDM系统进行仿真验证表明，采用该方法系统性能有明显的改善。
|
| 关 键 词： | 信道状态信息 维特比算法 无线局域网IEEE 802.11a |
Extraction and application of channel state information (CSI)In WLAN OFDM system |
| |
| JIANG Fan,CHEN Li-heng,ZHANG Li-jun.Extraction and application of channel state information (CSI)In WLAN OFDM system[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2005,17(3):292-295. |
| |
| Authors: | JIANG Fan CHEN Li-heng ZHANG Li-jun |
| |
| Abstract: | Viterbi algorithm is an implementation of the Maximum-Likelihood (ML) detector, which searches for the possible codeword and detects the one that is most likely to have generated the received sequence. The performance can be improved greatly by using the channel state information (CSI) in Viterbi decoder. In the paper,a method, which is the square of carrier amplitude, is used as channel state information (CSI).It is shown that a great improvement can be achieved according to the simulation results of the IEEE 802.11a OFDM system. |
| |
| Keywords: | channel state information (CSI) Viterbi algorithm WLAN IEEE802 11a |
| 本文献已被 CNKI 维普 等数据库收录！ |
