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Performance of Bayesian estimation based variable rate variable power MQAM system

Ong, LT, Lambotharan, S, Chambers, JA and Shikh-Bahaei, M (2006) Performance of Bayesian estimation based variable rate variable power MQAM system IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC.

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In this paper, we generalize the algorithms of our previously proposed Bayesian estimation based variable rate variable power multilevel quadrature amplitude modulation (VRVP-MQAM) system to incorporate for the first time a maximum a posteriori (MAP) channel predictor and a MQAM scheme adopted with practical constellation sizes. Based on a pilot symbol assisted modulation (PSAM) scheme, we evaluate the performance of our proposed VRVP-MQAM system over a Rayleigh flat-fading channel. We demonstrate in our simulation results that the proposed rate and power algorithms that are derived based on a Bayesian bit error rate (BER) estimation and the second order statistical characterization of the channel state information (CSI) outperforms in terms of spectral efficiency and average BER. This improvement is confirmed by comparison with an alternative rate and power algorithm which exploits an ideal CSI assumption. © 2006 IEEE.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Ong, LT
Lambotharan, S
Shikh-Bahaei, M
Date : 1 December 2006
DOI : 10.1109/PIMRC.2006.254452
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:26
Last Modified : 24 Jan 2020 23:56

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