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Iterative quantum-assisted multi-user detection for multi-carrier interleave division multiple access systems

Iterative quantum-assisted multi-user detection for multi-carrier interleave division multiple access systems
Iterative quantum-assisted multi-user detection for multi-carrier interleave division multiple access systems
With the proliferation of smart-phones and tablet PCs the data rates of wireless communications have been soaring. Hence, the need for power-efficient communications relying on low-complexity multiple-stream detectors has become more pressing than ever. As a remedy, in this paper we design low-complexity soft-input soft-output Quantum-assisted Multi-User Detectors (QMUD), which may be conveniently incorporated into state-of-the-art iterative receivers. Our design relies on EXtrinsic Information Transfer charts. Our QMUDs are then employed in Multi-Carrier Interleave-Division Multiple-Access (MC-IDMA) systems, which are investigated in the context of different channel code rate and spreading factor pairs, whilst fixing the total bandwidth requirement. One of our QMUDs is found to operate within 0.5 dB of the classical Maximum A posteriori Probability MUD after three iterations between the MUD and the decoders, while requiring only half its complexity, at a BER of 10-5 in the uplink of a rank-deficient MC-IDMA system relying on realistic imperfect channel estimation at the receiver, while supporting 14 users transmitting QPSK symbols.
1-15
Botsinis, Panagiotis
d7927fb0-95ca-4969-9f8c-1c0455524a1f
Alanis, Dimitrios
39e04fad-7530-44f2-b7d3-1b20722a0bd2
Babar, Zunaira
23ede793-1796-449d-b5aa-93a297e5677a
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Botsinis, Panagiotis
d7927fb0-95ca-4969-9f8c-1c0455524a1f
Alanis, Dimitrios
39e04fad-7530-44f2-b7d3-1b20722a0bd2
Babar, Zunaira
23ede793-1796-449d-b5aa-93a297e5677a
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Botsinis, Panagiotis, Alanis, Dimitrios, Babar, Zunaira, Ng, Soon Xin and Hanzo, Lajos (2015) Iterative quantum-assisted multi-user detection for multi-carrier interleave division multiple access systems. IEEE Transactions on Communications, 1-15. (doi:10.1109/TCOMM.2015.2458857).

Record type: Article

Abstract

With the proliferation of smart-phones and tablet PCs the data rates of wireless communications have been soaring. Hence, the need for power-efficient communications relying on low-complexity multiple-stream detectors has become more pressing than ever. As a remedy, in this paper we design low-complexity soft-input soft-output Quantum-assisted Multi-User Detectors (QMUD), which may be conveniently incorporated into state-of-the-art iterative receivers. Our design relies on EXtrinsic Information Transfer charts. Our QMUDs are then employed in Multi-Carrier Interleave-Division Multiple-Access (MC-IDMA) systems, which are investigated in the context of different channel code rate and spreading factor pairs, whilst fixing the total bandwidth requirement. One of our QMUDs is found to operate within 0.5 dB of the classical Maximum A posteriori Probability MUD after three iterations between the MUD and the decoders, while requiring only half its complexity, at a BER of 10-5 in the uplink of a rank-deficient MC-IDMA system relying on realistic imperfect channel estimation at the receiver, while supporting 14 users transmitting QPSK symbols.

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More information

Published date: 21 July 2015
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 380125
URI: https://eprints.soton.ac.uk/id/eprint/380125
PURE UUID: d83f3624-b8c9-410a-9694-4d334e365e1d
ORCID for Zunaira Babar: ORCID iD orcid.org/0000-0002-7498-4474
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 03 Sep 2015 13:49
Last modified: 04 Aug 2018 00:39

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