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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44659

Space Time Block Coding Application for MIMO OFDM Broadband Wireless Solutions

Rajat Gupta, Vikas Soni

Abstract

Multiple transmit antennas employ space–time block coding usingdata transfer in fading networks. Data is broken down into 'n' streams of continuously broadcast strings over n transmit antennas after being encoded using a space–time block code. The receiving signal is a combination of the n broadcasts signals that have been corrupted by noise at the receiver end. Instead using joint detection, the probabilistic decoding approach is used to recover data via decoupling of signals delivered from various antennas. The maximum likelihood decoding system uses the space–time block code's (OSTBC) orthogonal structure to provide a maximum-likelihood decoding algorithm dependent on linear computation at receiver. In this research, a Matlab/Simulink model built on orthogonal space–time block codes is constructed to acquire highest dimension of variability for a specific number of broadcastsas well as receive antennas utilizing a simple decoding technique. With as well as without grey coding, the orthogonal space coding block containing space–time block coding is utilized in Simulink block. The OSTBC algorithms calculate the highest achievable transmission rate for every amount of transmit antennas in any constellations, including an M-PSK array. M- PSK space–time block codes are used for different complex constellations to achieve 1/2 as well as 3/4 of highest allowable transmission rate for MIMO transmit antennas utilizing multiple various constellations

Keywords

Multipath channels, transmit diversity, multiple input multiple output, Wireless communication and OSTBC.

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