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Title: Performance of variable rate and variable power MQAM system based on bit error rate and channel estimates
Authors: Ong, Lay Teen
Shikh-Bahaei, Mohammad
Chambers, Jonathon
Lambotharan, Sangarapillai
Issue Date: 2006
Publisher: © IEEE
Citation: ONG, L.T. ... et al., 2006. Performance of variable rate and variable power MQAM system based on bit error rate and channel estimates. IN: Proceedings of 2006 International Conference on Communications, Circuits and Systems, Guilin, China, 25-28 June, Vol.2, pp. 1402-1406.
Abstract: We consider the effect of an imperfect channel estimate on a variable rate and variable power (VRVP) multilevel quadrature amplitude modulation (MQAM) system, where the transmit power and data rate are varied relative to the estimate of the received signal. Based on the VRVPMQAM system operating over a Rayleigh flat-fading channel, we derive a bit error rate (BER) estimator using a maximum a posteriori (MAP) estimation approach. We apply the BER estimator to the VRVP-MQAM system, and thereby derive and obtain system expressions which are applicable to any channel estimation technique. In addition, the resulting formulations are also useful for analyzing the effect of channel state information (CSI). Consequently, we derive and obtain an optimal solution for our proposed system and generate numerical results to compare the variations of system performance with imperfect CSI.
Description: This is a conference paper [© IEEE]. It is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Version: Published
DOI: 10.1109/ICCCAS.2006.284902
URI: https://dspace.lboro.ac.uk/2134/5616
Appears in Collections:Conference Papers and Contributions (Electronic, Electrical and Systems Engineering)

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