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Enebe, C.
Dept. of Electrical/Electronics Engineering, Michael Okpara University of Agriculture; Umudike, Abia State, Nigeria
Ifeagwu, E. N.
Dept. of Electrical/Electronics Engineering, Michael Okpara University of Agriculture; Umudike, Abia State, Nigeria
Idigo, V. E.
Dept. of Electronics and Computer Engineering, Nnamdi Azikiwe University; Awka, Anambra State
ABSTRACT
This research focused
on empirical study of signal recovery capacity of a space diversity scheme
using MatLab polar plot under a fading environment of Code Division Multiple
Access(CDMA) wireless radio system using an Orthogonal Frequency Division
Multiplexing (OFDM) Space diversity gain amplifier in space-time diversity
context. This addresses channel fading issues without altering RF spectrum
allocation and bandwidth limits. Consequently, a CDMA model was proposed and
implemented. Using the Orthogonal Space Time Block Code space diversity (OSTBC)
model, the Array Pattern (AP) and the Bit Error Rate (BER) performance over
multipath communication channel conditions were evaluated, while showing how
receiver diversity can improve channel interference with polar diagrams. The
polar plot shows diversity gain recovery. BER performances evaluated for the
channel conditions demonstrate the merits of the CDMA model offering over 90%
efficiency and multiple of 10-6 for space diversity scheme.
Keywords: CDMA20001x, fading, multipath propagation, polar plot
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Published
Wednesday, June 21, 2017
Issue
Vol. 3 No. 1, JUNE 2017
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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