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Compressive Sensing for Wireless Networks by Zhu Han, Wotao Yin, Husheng Li

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6

Compressed channel estimation

6.1 Introduction and motivation

The wireless channels place fundamental limitations on the performance of many wireless communication systems. A transmitted radio signal propagating from a transmitter to a receiver is generally reflected, scattered, and attenuated by the obstacles in the field. At the receiver, two or more slightly delayed versions of the transmitted signal will superpose together. This so-called fading phenomena in wireless communication channels is a double-edged sword to wireless communication systems [1, 270]. On the one hand, this multipath propagation phenomenon will result in severe fluctuations of the amplitudes, phases and delays of a radio signal over a short period of time or distance. ...

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