A novel OFDM switching algorithm for symmetric and asymmetric MIMO architectures. (12th October 2020)

• Record Type: Journal Article
• Authors: Mlayeh, Yosra; Rouissi, Fatma; Tlili, Fethi; Ghazel, Adel
• Other Names: Schifanella Claudio guestEditor.; Bracciali Andrea guestEditor.; Benkrid Soumia guestEditor.; Moussa Rim guestEditor.; Badir Hassan guestEditor.; Lo Moussa guestEditor.; Bellatreche Ladjel guestEditor.
• Is Part Of: Concurrency and computation. Volume 33:Number 1(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-10-12
• Subjects: adaptation -- condition number -- massive MIMO -- MIMO diversity -- postprocessing SNR -- spatial multiplexing; Parallel processing (Electronic computers) -- Periodicals; Parallel computers -- Periodicals; 004.35
• DOI: 10.1002/cpe.5831
• Languages: English
• ISSNs: 1532-0626

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.