A two-step multiuser detection scheme for space-time coded MIMO OFDM systems

In this paper, we investigate transceiver design for a wideband multiuser-multiple-input, multiple-output (MIMO) communication system, where the co-channel users are equipped with multiple transmit and multiple receive antennas. In particular, we develop a two-step hard-decision interference cancell...

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Main Authors: Li Zhang, Mathini Sellathurai, Jonathon Chambers
Format: Default Conference proceeding
Published: 2006
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Online Access:https://hdl.handle.net/2134/5617
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spelling rr-article-95531512006-01-01T00:00:00Z A two-step multiuser detection scheme for space-time coded MIMO OFDM systems Li Zhang (8200) Mathini Sellathurai (7208636) Jonathon Chambers (1251609) Mechanical engineering not elsewhere classified untagged Mechanical Engineering not elsewhere classified In this paper, we investigate transceiver design for a wideband multiuser-multiple-input, multiple-output (MIMO) communication system, where the co-channel users are equipped with multiple transmit and multiple receive antennas. In particular, we develop a two-step hard-decision interference cancellation receiver for a multiuser-MIMO uplink system which employs orthogonal frequency division multiplexing (OFDM) modulation and space-time block codes (STBC). The STBC has been implemented either over adjacent tones or adjacent OFDM symbols and the performances of both implementations have been tested under slowly time-varying channels. The two-step receiver structure has been implemented using a combined interference suppression scheme based on minimum mean-squared error (MMSE) and symbol-wise likelihood detectors, which is then followed by an interference cancellation step. The receiver can suppress and cancel the interference from the co-channel users effectively without increasing the complexity significantly. The paper also includes computer experiments that are intended to improve the understanding of specific issues involved in the design of multiuser STBC-OFDM systems. 2006-01-01T00:00:00Z Text Conference contribution 2134/5617 https://figshare.com/articles/conference_contribution/A_two-step_multiuser_detection_scheme_for_space-time_coded_MIMO_OFDM_systems/9553151 CC BY-NC-ND 4.0
institution Loughborough University
collection Figshare
topic Mechanical engineering not elsewhere classified
untagged
Mechanical Engineering not elsewhere classified
spellingShingle Mechanical engineering not elsewhere classified
untagged
Mechanical Engineering not elsewhere classified
Li Zhang
Mathini Sellathurai
Jonathon Chambers
A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
description In this paper, we investigate transceiver design for a wideband multiuser-multiple-input, multiple-output (MIMO) communication system, where the co-channel users are equipped with multiple transmit and multiple receive antennas. In particular, we develop a two-step hard-decision interference cancellation receiver for a multiuser-MIMO uplink system which employs orthogonal frequency division multiplexing (OFDM) modulation and space-time block codes (STBC). The STBC has been implemented either over adjacent tones or adjacent OFDM symbols and the performances of both implementations have been tested under slowly time-varying channels. The two-step receiver structure has been implemented using a combined interference suppression scheme based on minimum mean-squared error (MMSE) and symbol-wise likelihood detectors, which is then followed by an interference cancellation step. The receiver can suppress and cancel the interference from the co-channel users effectively without increasing the complexity significantly. The paper also includes computer experiments that are intended to improve the understanding of specific issues involved in the design of multiuser STBC-OFDM systems.
format Default
Conference proceeding
author Li Zhang
Mathini Sellathurai
Jonathon Chambers
author_facet Li Zhang
Mathini Sellathurai
Jonathon Chambers
author_sort Li Zhang (8200)
title A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
title_short A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
title_full A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
title_fullStr A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
title_full_unstemmed A two-step multiuser detection scheme for space-time coded MIMO OFDM systems
title_sort two-step multiuser detection scheme for space-time coded mimo ofdm systems
publishDate 2006
url https://hdl.handle.net/2134/5617
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