Title :
Long Term Cluster-Based Channel Envelope and Phase Prediction for Dynamic Link Adaptation
Author :
Pham, Viet-Ha ; Wang, Xianbin ; Nadeau, Jay
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada
fDate :
7/1/2011 12:00:00 AM
Abstract :
A new cluster-based channel envelope and phase predictor is proposed for dynamic link adaptation in broadband wireless systems, based on our observation that each Multipath Cluster (MC) has its own variation characteristics, which can be identified and traced precisely. The proposed predictor consists of a channel envelope predictor and a phase slope detector. The performance of the proposed channel predictor has been verified through numerical simulations and field test measurement data. At a channel SNR of 6.05 dB and a prediction range of 240 Orthogonal Frequency Division Multiplexing (OFDM) symbols, the obtained normalized mean square error is less than -20 dB.
Keywords :
OFDM modulation; broadband networks; radio networks; wireless channels; broadband wireless systems; channel predictor; dynamic link adaptation; long term cluster-based channel envelope; multipath cluster; normalized mean square error; orthogonal frequency division multiplexing symbols; phase prediction; Channel estimation; Doppler effect; Frequency domain analysis; OFDM; Predictive models; Time domain analysis; Wireless communication; Channel prediction; LTE-Advanced; WiMAX; link adaptation; time division duplex;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.051011.101684
