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In this paper, a distributed mobile relay power control (DMRPC) scheme for maximizing individual cell throughput is proposed for mobile relay station (MRS) aided system. In the system with DMRPC, the power levels of MRSs are controlled by individual cell without cell cooperation and signaling overhead, and the appropriate power levels of MRSs are selected to maximize the cell throughput of their individual...
In fast moving environment, the inter-carrier interference (ICI) due to Doppler spread will degrade the performance of OFDM system severely. Using Jakes' model for the Doppler power spectrum and linear model for time-varying channel during an OFDM symbol interval, the analytical closed- form expression of ICI power, signal-to-interference ratio (SIR) and signal-to-interference-plus-noise ratio (SINR)...
The time-variation of channels during one OFDM symbol destroys the orthogonality among subcarriers and results in intercarrier interference (ICI), which may detail substantial error performance. Assumed channels vary in linear fashion during one OFDM symbol, we propose an iterative partial-ICI-cancellation (PIC) based detector for OFDM systems with linear modulation over doubly-selective Rayleigh...
Coherent orthogonal frequency division multiple access (OFDM) systems are highly sensitive to the carrier frequency offset (CFO) and the channel estimation errors. In this paper, we develop a novel scheme for joint carrier frequency offset and channel estimation in a Rayleigh flat-fading channel. Unlike existing alternatives, the proposed CFO estimators relying on second-order statistics of OFDM signals...
Orthogonal frequency-division multiplexing (OFDM) exhibits a significant sensitivity to the phase noise of the oscillator. For this reason, it is important to evaluate the impact of the phase noise on the system performance. In this paper, the background for phase noise is presented. Meanwhlie, the two models are given for the purpose of the analysis and simulation. Then, the effect of phase noise...
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