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Iterative Joint Channel and Data Estimation for Rank-Deficient MIMO-OFDM

Iterative Joint Channel and Data Estimation for Rank-Deficient MIMO-OFDM
Iterative Joint Channel and Data Estimation for Rank-Deficient MIMO-OFDM
In this paper we propose a turbo-detected multi-antenna-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 analyze 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-1/2 turbo-coded 8x8-QPSK-OFDM system, exhibiting an effective throughput of 8*2/2=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.
Akhtman, Jos
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Wolfgang, Andreas
029e48ea-f4a9-4334-8e9f-1d4b9fe1b0e3
Chen, Sheng
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Hanzo, Lajos
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Akhtman, Jos
6f612df7-9c17-4351-8340-5171fd174330
Wolfgang, Andreas
029e48ea-f4a9-4334-8e9f-1d4b9fe1b0e3
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Akhtman, Jos, Wolfgang, Andreas, Chen, Sheng and Hanzo, Lajos (2007) Iterative Joint Channel and Data Estimation for Rank-Deficient MIMO-OFDM EPrints

Record type: Article

Abstract

In this paper we propose a turbo-detected multi-antenna-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 analyze 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-1/2 turbo-coded 8x8-QPSK-OFDM system, exhibiting an effective throughput of 8*2/2=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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Published date: 2007
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 266814
URI: https://eprints.soton.ac.uk/id/eprint/266814
PURE UUID: 99a9f144-cacf-443a-8d12-8234567bc81d
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 21 Oct 2008 11:02
Last modified: 18 Jul 2017 07:11

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Contributors

Author: Jos Akhtman
Author: Andreas Wolfgang
Author: Sheng Chen
Author: Lajos Hanzo ORCID iD

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