A novelOFDMswitching algorithm for symmetric and asymmetricMIMOarchitectures

Abstract

Summary In this article, we propose a new criterion for a switching algorithm to be used in MIMO‐OFDM systems. The switching algorithm, which selects between spatial multiplexing and MIMO diversity using the Demmel condition number as selection metrics, is first analyzed. Then, we show the limitation of this criterion, when increasing the receive antenna number. As a solution, we propose multiantenna processing and SNR switching criterion as a novel selection metric. The channel between the transmitter and the receiver is assumed a Rayleigh‐fading channel. Simulations results show that the proposed switching algorithm improves the performances in terms of bit error rate (BER) for symmetric and asymmetric MIMO systems. The gain is about 3 dB at BER = 10−4 in (4×4) architecture and 2 dB at BER = 10−4 in (3×2) architecture.

Towards understanding and harnessing the potential of Africa in digitalization

“…The 10th paper, entitled “A Novel OFDM Switching Algorithm for Symmetric and Asymmetric MIMO Architectures” by Mlayeh et al 10 . defines a new criterion for a MIMO‐OFDM (multiple‐input multiple‐output–orthogonal frequency division multiplexing) switching algorithm called MAP_SNR_SC criterion.…”