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Title: A two-step interference cancellation technique for a MIMO-OFDM system with four transmit antennas
Authors: Cheng, Shen
Li, Zhang
Chambers, Jonathon
Keywords: MIMO-OFDM
QO-STBC
Full-rate
Interference
Cancellation
Two-step
Issue Date: 2007
Publisher: © IEEE
Citation: CHENG, S., LI, Z. and CHAMBERS, J., 2007. A two-step interference cancellation technique for a MIMO-OFDM system with four transmit antennas. IN: 15th International Conference on Digital Signal Processing, Cardiff , 1-4th July, pp. 351 - 354
Abstract: In this paper a new two-step interference cancellation (IC) technique for an orthogonal frequency division multiplexing system with multiple transmitter and receiver antennas linked over a frequency selective channel is explored. We first utilize a recently proposed type of full code rate space- time block code, which is quasi-orthogonal space-time block code (QO-STBC) scheme to exploit temporal and spatial diversity within a multiuser environment with k co- channel users. We adopt four transmit antennas for each user and two antennas in the receiver. Our scheme has a combined interference suppression scheme based on minimum mean-square error (MMSE) and maximum likelihood (ML) detector, followed by an interference cancellation step. The frame error rate (FER) performance for the proposed algorithm is compared with orthogonal space-time block codes (O-STBC) for two transmitter antennas and extended orthogonal space-time block codes (EO-STBC) in quasi-static and slow fading frequency selective channels. Simulation results show that the proposed method yields a significant improvement in FER performance.
Description: This is a conference paper [© IEEE]. It is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Version: Published
DOI: 10.1109/ICDSP.2007.4288591
URI: https://dspace.lboro.ac.uk/2134/5635
ISBN: 1424408822
Appears in Collections:Conference Papers and Contributions (Electronic, Electrical and Systems Engineering)

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