Title :
Power Adaptation in OFDM Systems Based on Velocity Variation Under Rapidly Time-Varying Channels
Author :
Zhicheng Dong ; Pingzhi Fan ; Xianfu Lei
Author_Institution :
Key Lab. of Inf. Coding & Transm., Southwest Jiaotong Univ., Chengdu, China
Abstract :
A novel power adaptation scheme, based on the terminal velocity instead of channel state information (CSI), in OFDM systems over rapidly time-varying channels, is proposed. Simulation results show that the proposed power adaptation scheme based on the velocity variation is effective for improving the performance of OFDM systems in fast fading channels.
Keywords :
OFDM modulation; fading channels; time-varying channels; CSI; OFDM system; channel state information; orthogonal frequency division multiplexing; power adaptation; time-varying fading channel; velocity variation; Bit error rate; Fading; Interference; OFDM; Signal to noise ratio; Time-varying channels; Wireless communication; Average spectral efficiency (ASE); intercarrier interference (ICI); orthogonal frequency division multiplexing (OFDM); rapidly time-varying channels;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2396070
