Detection Performance of MIMO Unique Word OFDM
Conference: WSA 2016 - 20th International ITG Workshop on Smart Antennas
03/09/2016 - 03/11/2016 at München, Deutschland
Proceedings: WSA 2016
Pages: 8Language: englishTyp: PDF
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Authors:
Tomashevich, Victor; Polian, Ilia (Faculty of Mathematics and Computer Science, University of Passau, Innstr. 41, 94032 Passau, Germany)
Abstract:
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.