Successive Interference Cancellation for MIMO UW-OFDM
Conference: WSA 2017 - 21th International ITG Workshop on Smart Antennas
03/15/2017 - 03/17/2017 at Berlin, Deutschland
Proceedings: WSA 2017
Pages: 5Language: englishTyp: PDF
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Authors:
Cheema, Sher Ali; Zhang, Jianshu; Haardt, Martin (Communication Research Laboratory, Ilmenau University of Technology, Germany)
Huemer, Mario (Institute of Signal Processing, Johannes Kepler University, Linz, Austria)
Abstract:
Unique word - orthogonal frequency division multiplexing (UW-OFDM) is a new signaling concept which has better spectral properties and also a superior bit error ratio (BER) performance over conventional cyclic prefix (CP) based OFDM. In UW-OFDM, the CPs are replaced by deterministic sequences, the so-called unique words (UWs). So far, the performance of UW-OFDM has been well investigated for single-input single-output (SISO) systems. Recently, we expanded our investigation of UW-OFDM to MIMO systems and proposed two linear detection approaches. In this work, we extend our work and propose successive interference cancellation (SIC) based non-linear detection schemes for MIMO UW-OFDM systems. We also compare the results to CP-OFDM with linear and SIC based detection schemes. The results show that UW-OFDM with SIC not only outperforms UW-OFDM with linear detection schemes but also CP-OFDM significantly.