| 频率选择性衰落信道下长扩频序列CDMA 系统的盲波束成形 |
| |
| 引用本文： | 孙晓颖,王树勋.频率选择性衰落信道下长扩频序列CDMA 系统的盲波束成形[J].电子学报,2002,30(9):1349-1352. |
| |
| 作者姓名： | 孙晓颖 王树勋 |
| |
| 作者单位： | 吉林大学通信工程学院,吉林长春,130012 |
| |
| 摘 要： | 本文提出一种适用于频率选择性衰落信道下长扩频序列CDMA系统，基于DMMSE准则的盲波束成形方案。该方案反频率选择性衰落信道分解成若干个非频率选择性衰落子信道，不需要训练符号开销，回避跟踪衰落信道参数，以所需用户的扩频序列作为永久性训练序列。仿真结果验证了其抵抗远近效应、抑制多址干扰的能力。
|
| 关 键 词： | 长扩频序列 盲波速成形 CDMA 衰落信道 MMSE准则 最小均方误差 |
| 文章编号： | 0372-2112(2002)09-1349-04 |
Blind Beamforming for Long Spreading Sequence CDMA System in Frequency Selective Fading Channel |
| |
| SUN Xiao-ying,WANG Shu-xun.Blind Beamforming for Long Spreading Sequence CDMA System in Frequency Selective Fading Channel[J].Acta Electronica Sinica,2002,30(9):1349-1352. |
| |
| Authors: | SUN Xiao-ying WANG Shu-xun |
| |
| Abstract: | A new blind beamforming method based on Differential Minimum Mean Square (DMMSE) criterion proposed in this paper is adapted to long spreading sequence CDMA system with antenna array in frequency selective fading channel. The aforementioned approach converts a frequency selective fading channel to several frequency nonselective fading subchannels, avoids tracking the channel fading coefficients and takes the desired user's spreading sequence as a perpetual training sequence without the overhead of the desired user s data symbols. The simulation validates the performance of suppressing multiple access interference and combating near-far effect. |
| |
| Keywords: | antenna array CDMA beamforing fading channel |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
