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Enhanced information throughput in multiple input multiple output orthogonal frequency division multiplexing based systems using fractional sampling and iterative signal processing
Author(s) -
Sharma Shree Krishna,
Patwary Mohammad,
AbdelMaguid Mohamed
Publication year - 2014
Publication title -
transactions on emerging telecommunications technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.366
H-Index - 47
ISSN - 2161-3915
DOI - 10.1002/ett.2735
Subject(s) - orthogonal frequency division multiplexing , computer science , mimo , throughput , mimo ofdm , multiplexing , electronic engineering , bit error rate , algorithm , context (archaeology) , wireless , channel (broadcasting) , telecommunications , engineering , paleontology , biology
Herein, we study the feasibility of enhanced information throughput capability of multiple input multiple output orthogonal frequency division multiplexing (MIMO‐OFDM) based wireless communication systems in the context of increasing wireless capacity demand. The concept of fractional sampling (FS) is exploited for this purpose to take advantage of diversity created because of it. Furthermore, a novel channel adaptive iterative sequence detector is proposed using the FS technique. The performance analysis of the proposed receiver is carried out, and a tighter performance bound is derived. It is found that the FS technique can improve bit error rate performance of MIMO and OFDM based systems provided that the noise samples are uncorrelated up to a certain level of FS rate. Moreover, it is observed that the performance improvement is a non‐linear function of the FS rate. Besides this, the simulation results show that the proposed iterative receiver can significantly enhance the information throughput of MIMO‐OFDM based wireless communication systems in comparison to conventional non‐iterative receivers. Copyright © 2013 John Wiley & Sons, Ltd.