Basis expansion models and diversity techniques for blind identification and equalization of time-varying channels
Basis expansion models and diversity techniques for blind identification and equalization of time-varying channels
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DOI：
10.1109/5.720248
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发表时间：
1998-12
期刊：
影响因子：
--
通讯作者：
G. Giannakis;C. Tepedelenlioğlu
中科院分区：
文献类型：
--
作者：
G. Giannakis;C. Tepedelenlioğlu
快速衰落的移动通信通道的随时间变化的冲动响应是根据多径传播遇到的多普勒效应而产生的复杂指数的基础扩展的。审查了盲方法，以估计基础参数和模型顺序。现有的二阶方法是对现有的批评，并开发了新的算法，用于盲目识别，直接，零强度的均衡和最小均方误差（MMSE）均衡（通过将信道多样性与时间（分数采样）结合（分数采样）和/或空间多样性相结合，这些算法都可以与之相结合。多个接收器。还提供了说明性模拟。
The time-varying impulse response of rapidly fading mobile communication channels is expanded over a basis of complex exponentials that arise due to Doppler effects encountered with multipath propagation. Blind methods are reviewed for estimating the bases' parameters and the model orders. Existing second-order methods are critiqued and novel algorithms are developed for blind identification, direct, zero-forcing equalization and minimum mean square error (MMSE) equalization by combining channel diversity with temporal (fractional sampling) and/or spatial diversity which becomes available with multiple receivers. Illustrative simulations are also presented.