Performance of Variable Rate and Variable Power MQAM System.pdf (4.47 MB)
Performance of variable rate and variable power MQAM system based on bit error rate and channel estimates
conference contribution
posted on 2009-12-08, 10:11 authored by Lay Teen Ong, Mohammad Shikh-Bahaei, Jonathon Chambers, Sangarapillai LambotharanSangarapillai LambotharanWe 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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
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.Publisher
© IEEEVersion
- VoR (Version of Record)
Publication date
2006Notes
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- en