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Iterative detection and decoding using approximate Bayesian theorem based PDA method over MIMO Nakagami-m fading channels

Iterative detection and decoding using approximate Bayesian theorem based PDA method over MIMO Nakagami-m fading channels
Iterative detection and decoding using approximate Bayesian theorem based PDA method over MIMO Nakagami-m fading channels
In this paper, the design of iterative detection and decoding (IDD) schemes relying on a low-complexity probabilistic data association (PDA) aided method is conceived for turbo-coded multiple-input multiple-output (MIMO) systems communicating over Nakagami-m fading channels. The known PDA based MIMO detectors typically operate purely in the probability-domain. We show that the classic relationship where the extrinsic LLRs are given by subtracting the a priori LLRs from the a posteriori LLRs does not hold for the existing PDA based MIMO detectors. Therefore, the PDA method is not readily applicable to the IDD receiver. To overcome this predicament, we propose an approximate Bayesian theorem based log-domain PDA (AB-Log-PDA) detector, as well as a novel simple approach of calculating the bit-wise extrinsic LLRs for the AB-Log-PDA, which makes the AB-Log-PDA well-suited for employment in IDD receivers. It is shown that the proposed AB-Log-PDA based IDD scheme is capable of achieving a comparable performance to that of the optimal maximum a posteriori (MAP) detector based IDD receiver, while imposing a much lower computational complexity in the scenarios considered.
extrinsic information transfer, EXIT, chart, iterative detection and decoding, multiple-input multiple-output, mimo, probabilistic data association, pda, nakagami-m fading channel
3588-3593
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Yang, Shaoshi and Hanzo, Lajos (2012) Iterative detection and decoding using approximate Bayesian theorem based PDA method over MIMO Nakagami-m fading channels. 2012 IEEE Global Communications Conference (GLOBECOM), , Anaheim, United States. 03 - 07 Dec 2012. pp. 3588-3593 . (doi:10.1109/GLOCOM.2012.6503672).

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, the design of iterative detection and decoding (IDD) schemes relying on a low-complexity probabilistic data association (PDA) aided method is conceived for turbo-coded multiple-input multiple-output (MIMO) systems communicating over Nakagami-m fading channels. The known PDA based MIMO detectors typically operate purely in the probability-domain. We show that the classic relationship where the extrinsic LLRs are given by subtracting the a priori LLRs from the a posteriori LLRs does not hold for the existing PDA based MIMO detectors. Therefore, the PDA method is not readily applicable to the IDD receiver. To overcome this predicament, we propose an approximate Bayesian theorem based log-domain PDA (AB-Log-PDA) detector, as well as a novel simple approach of calculating the bit-wise extrinsic LLRs for the AB-Log-PDA, which makes the AB-Log-PDA well-suited for employment in IDD receivers. It is shown that the proposed AB-Log-PDA based IDD scheme is capable of achieving a comparable performance to that of the optimal maximum a posteriori (MAP) detector based IDD receiver, while imposing a much lower computational complexity in the scenarios considered.

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More information

Published date: 3 December 2012
Venue - Dates: 2012 IEEE Global Communications Conference (GLOBECOM), , Anaheim, United States, 2012-12-03 - 2012-12-07
Keywords: extrinsic information transfer, EXIT, chart, iterative detection and decoding, multiple-input multiple-output, mimo, probabilistic data association, pda, nakagami-m fading channel
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 340767
URI: http://eprints.soton.ac.uk/id/eprint/340767
PURE UUID: 58c6e14a-5057-430f-b876-d1b3abaf37cf
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 05 Jul 2012 11:19
Last modified: 18 Mar 2024 02:35

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Contributors

Author: Shaoshi Yang
Author: Lajos Hanzo ORCID iD

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