Subcarrier-grouping based detection schemes for multi-layer STBC coded MIMO-OFDM

Ming Lei, Ryuhei Funada, Hiroshi Harada, Shuuzou Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a multi-layer space-time block coded orthogonal frequency division multiplexing (Multi-Layer STBC OFDM) scheme. It combines the spatial diversity and spatial multiplexing in order to exploit the benefits of both techniques. The transmit antennas are divided into several layers and each layer is encoded by STBC. The antennas transmit OFDM signals in order to deal with frequency-selective fading channels. In addition to Exhaustive Detection Scheme which applies the same detection at each subcarrier independently, we exploit the subcarrier correlation to develop two subcarrier-grouping based detection schemes. The subcarriers bound into the same group share the same detection parameters, e.g., layer detection order or nulling matrices, which are obtained at the center subcarrier of that group. The proposed schemes can significantly reduce the complexity with very small performance loss. The simulation results show that compared with Exhaustive Detection Scheme, the propose detection scheme is capable of reducing 51.79% complexity with only 0.5dB performance loss for 4×4 system, and reducing 69.96% complexity with only 1.0dB performance loss for 6×6 system.

Original languageEnglish
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages842-847
Number of pages6
DOIs
Publication statusPublished - 2007 Nov 27
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 2007 Mar 112007 Mar 15

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period07/3/1107/3/15

Keywords

  • MIMO
  • OFDM
  • STBC
  • Subcarrier grouping

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Lei, M., Funada, R., Harada, H., & Kato, S. (2007). Subcarrier-grouping based detection schemes for multi-layer STBC coded MIMO-OFDM. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 (pp. 842-847). [4204336] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2007.160