Reconfigurable antennas and link adaptation algorithms for MIMO-OFDM wireless systems

Document Type

Article

Publication Date

12-15-2015

Abstract

In this work, we study and analyze the performance of physical layer algorithms for adaptive multiple input-multiple output orthogonal frequency-division multiplexing (MIMO-OFDM) wireless systems that employ a new class of adaptive antenna systems known as reconfigurable antennas. These antennas are capable of adaptively modifying their radiation characteristics and thus leverage pattern diversity to affect how the transmitter and receiver perceive the wireless channel. We propose a low complexity spatial adaptive modulation and coding (AMC) algorithm that uses the advantages of pattern reconfigurable antennas in concert with link adaptation to improve MIMO-OFDM link throughput. The algorithm operates in two main stages; first, it searches for the antenna configuration that yields the highest post processing signal-to-noise ratio (ppSNR) and, then, applies AMC to improve spectral efficiency. The performance of the proposed scheme is experimentally evaluated for a 2×2 MIMO-OFDM wireless system in an indoor environment.

Identifier

84931268560 (Scopus)

Publication Title

Eurasip Journal on Wireless Communications and Networking

External Full Text Location

https://doi.org/10.1186/s13638-015-0390-6

e-ISSN

16871499

ISSN

16871472

Issue

1

Volume

2015

Grant

0916480

Fund Ref

National Science Foundation

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