Title: Survey on different low complexity decoding algorithms for different orthogonal STBC MIMO wireless communication system under Rayleigh fading channel

Authors: Priyanka Mishra; Chandra Kant Shukla

Addresses: Department of Electronics and Communication, Faculty of Engineering & Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Uttar Pradesh, India ' Department of Electronics and Communication, Faculty of Engineering & Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Uttar Pradesh, India

Abstract: In this paper, we have presented a survey based on the combination of spatial multiplexing and space time coding techniques under Rayleigh fading channel constraint in MIMO wireless communication systems. The decoding algorithms like Maximum Likelihood, V-BLAST and Sphere Decoder are analysed and their performance is evaluated using different orthogonal space-time block coding techniques, like quasi and rotated quasi-orthogonal space-time block codes. It has been observed that noise and interference get reduced by our proposed encoders with lower complexity at the receiver end. This improves the noise and interference performance by offering low complexity at the receiver. The paper also focuses on the performance of the combining effect of the demodulation algorithms with several other STBCs in the outcome.

Keywords: MIMO; multiple input multiple output; OSTBC; orthogonal space time block codes; rotated QOSTBC; sphere decoder; maximal likelihood; V-BLAST; vertical-bell laboratories layered space-time.

DOI: 10.1504/IJWMC.2018.097174

International Journal of Wireless and Mobile Computing, 2018 Vol.15 No.4, pp.299 - 309

Received: 16 Sep 2017
Accepted: 21 Aug 2018

Published online: 26 Dec 2018 *

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