Performance Evaluation for Adaptive Modulation over Rayleigh Fading Channel
Date
2017-09-13
Authors
Elnawaa, Khamis Hamid
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Abstract
In this project, adaptive modulation for end to end wireless link system using
MQAM modulation scheme over Rayleigh fading channel is addressed. Selecting
the modulation schemes, which maintain appropriate frame error rate and maximum
throughput, according to channel states is discussed. First order Finite state Markov
chain (FSMC) model is utilized to model the channel states in terms of SNR. In
order to get the best choice modulation scheme selection for the adaptive modulation
system, a new method for channel partitioning the is proposed. In this method, we
select the SNR levels of the channel based on a desired (target) FER of the system
with respect to the average time of channel state duration. We present another
method for channel petitioning, which is called equilibrium steady state method. for
both methods, performance measures of the FSMC model for Rayleigh channel are
derived, plotted and analyzed. The performance analysis of the system and numerical
results of both methods are compared and discussed.
Description
Keywords
Adaptive Modulation M-QAM, Finite State Markov Chain, Rayleigh Fading Channel