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TH (Tomlinson-Harashima) precoding is an important nonlinear precoding method. In this paper, the bit error rate (BER) performance for the TH precoding system is investigated over time varying and dispersive Ricean fading channels. Assuming that there exists a certain delay introduced by the feedback channel, we first model the feedback error of channel station information (CSI) due to the feedback...
This paper considers multiuser cooperative relay networks with user selection at the mobile station, where both the relay and mobile users are corrupted by a finite number of co-channel interferers. We study the impact of the outdated channel state information (CSI) on the system performances over time-varying Rayleigh fading channels by deriving the tight lower bounds for the outage probability and...
In this paper, the variance of OFDM system capacity has been thoroughly investigated. A mathematical expression of the capacity variance as a function of the number of subcarriers of an OFDM symbol, the number of multi-path fading channel, the system signal to noise ratio (SNR), the power profile of the fading channel, has been derived. Numerical and computer simulation results show that the capacity...
Fast fading channels will result in the inter-carrier interference (ICI) and degrade the performance of orthogonal frequency division multiplexing (OFDM) systems. In this paper, a novel pilot pattern and corresponding channel estimation and data detection method for OFDM systems with fast fading channels have been proposed and investigated. The proposed pilot pattern is composed of two classical pilot...
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