Detection Performance of MIMO Unique Word OFDM

Konferenz: WSA 2016 - 20th International ITG Workshop on Smart Antennas
09.03.2016 - 11.03.2016 in München, Deutschland

Tagungsband: ITG-Fb. 261: WSA 2016

Seiten: 8Sprache: EnglischTyp: PDF

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Tomashevich, Victor; Polian, Ilia (Faculty of Mathematics and Computer Science, University of Passau, Innstr. 41, 94032 Passau, Germany)

This paper introduces generalization of unique word OFDM (orthogonal frequency division multiplexing) signaling scheme to multiple antennas (MIMO). As UW-OFDM represents a virtual massive MIMO system, the quasi-maximum likelihood (ML) detection algorithms initially introduced for massive MIMO systems are adapted to MIMO UW-OFDM. Results show that in an uncoded system MIMO UW-OFDM is able to exceed ML performance of MIMO CP-OFDM. However, the complexity penalty is not negligible. In case of a coded system, ML detected MIMO CP-OFDM still performs better. MIMO UW-OFDM represents a performance/complexity tradeoff between linear and ML detected MIMO CP-OFDM.