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In this paper, an improved method for reconstruction of doubly selective wireless channels in piloted-aided OFDM systems based an existing estimation method is proposed. In this re-expansion channel estimation process, the first few Fourier coefficients of each channel tap are estimated from the pilot information and the received signal firstly. Then the channel taps are estimated in the framework...
Antenna selection technology in MIMO diversity system can achieve almost the same diversity gain as omni-directional antenna without increasing the radio frequency link in system. Several drawbacks exist in commonly used diversity reception method since it only considers the intensity fading of signal rather than content analysis and comparison of signal. In this paper, we study the current wireless...
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