Performance of ma-spatial modulation: information theoretic criteria over correlated Rayleigh fading channels
Abstract
In this study, symbol error probability of tra
nsmitted modulation signals for a single-input
–
multiple-output
system is used to derive overall average bit error probab
ility (ABEP) of multiple active-spatial modulation (MA-SM)
system as a function of the number density of bits in error. Specifically, a theoretic method of determining the number
density of bits in error in the joint detector of MA-SM is p
roposed. Sample variance (SV)
criterion uses the sample
covariance of detector noise data, while mutual informat
ion (MI) criterion uses rela
tive entropy derived from the
Kullback
–
Liebler distance to compute the number density of bi
ts in error. The choice for the better criterion is
formulated as a model selection problem between the SV an
d the MI criteria. Analytica
l results for ABEP are tightly
verified from simulations, which are carried out under arbitrarily correlated flat Rayleigh fading channels. Various data
rates, antenna spacing and number of transmit and receive antenna configurations are tested, where it is also shown
that SM is a special case of MA-SM. Mo
reover, a basis spectral efficiency
(BSE) formula for MA-SM systems is
proposed, which can be used to select a preferred antenna configuration without the need for simulations
Publisher
University of Nairobi
Rights
Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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