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Iterative Receiver Architectures for MIMO-OFDM

Iterative Receiver Architectures for MIMO-OFDM
Iterative Receiver Architectures for MIMO-OFDM
In this paper we propose a turbo-detected multiantenna-multi-carrier receiver scheme. Following the philosophy of the turbo processing, our turbo MIMO-OFDM receiver comprises a succession of detection modules, namely the channel estimator, the space-time detector and the decoder, which iteratively exchange soft bit-related information and thus facilitate a substantial improvement of the overall system performance. In this paper we analyse the achievable performance of the iterative system proposed with the aim of documenting the various design trade-offs, such as the achievable error-rate performance, the attainable data-rate as well as the associated computational complexity. Specifically, we report a virtually error-free performance for a rate-12 turbo-coded 8x8-QPSK-OFDM system, exhibiting an effective throughput of 8·2·1 2=8 bits/sec/Hz and having a pilot overhead of only 10%, at SNR of 7.5dB and normalized Doppler frequency of 0.003, which corresponds to a mobile terminal speed of about 65 km/h.
825-829
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Akhtman, J.
d4fd2b26-c123-463d-847c-80adc83a89fa
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Akhtman, J. and Hanzo, L. (2007) Iterative Receiver Architectures for MIMO-OFDM. IEEE WCNC'07. 11 - 15 Mar 2007. pp. 825-829 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper we propose a turbo-detected multiantenna-multi-carrier receiver scheme. Following the philosophy of the turbo processing, our turbo MIMO-OFDM receiver comprises a succession of detection modules, namely the channel estimator, the space-time detector and the decoder, which iteratively exchange soft bit-related information and thus facilitate a substantial improvement of the overall system performance. In this paper we analyse the achievable performance of the iterative system proposed with the aim of documenting the various design trade-offs, such as the achievable error-rate performance, the attainable data-rate as well as the associated computational complexity. Specifically, we report a virtually error-free performance for a rate-12 turbo-coded 8x8-QPSK-OFDM system, exhibiting an effective throughput of 8·2·1 2=8 bits/sec/Hz and having a pilot overhead of only 10%, at SNR of 7.5dB and normalized Doppler frequency of 0.003, which corresponds to a mobile terminal speed of about 65 km/h.

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More information

Published date: March 2007
Additional Information: Event Dates: 11-15 March 2007
Venue - Dates: IEEE WCNC'07, 2007-03-11 - 2007-03-15
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 263892
URI: https://eprints.soton.ac.uk/id/eprint/263892
PURE UUID: 0c9d719c-113d-4d15-ab7a-ae5d201a0c32
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 19 Apr 2007
Last modified: 06 Jun 2018 13:14

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