Spatial modulation and space-time shift keying: optimal performance at a reduced detection complexity
Spatial modulation and space-time shift keying: optimal performance at a reduced detection complexity
Abstract—In this paper, we propose a comprehensive reduced-
complexity detector both for hard-decision-aided as well as for
the soft-decision-assisted Spatial Modulation (SM)/Space-Time
Shift Keying (STSK). More explicitly, the detection of the SM
scheme, which activates a single one out of M antennas to
transmit a single LPSK/QAM symbol, may be carried out by
detecting the antenna activation index m and the LPSK/QAM
symbol sl separately, so that the detection complexity may be
reduced from the order of O(M · L) to the lower bound of
O(M + log2 L). However, the QAM aided STSK hard detection
proposed in [1] results in a performance loss. Furthermore, the
Max-Log-MAP algorithm proposed for soft STSK detection in [2]
only takes into account the maximum a posteriori probabilities,
which also imposed a performance degradation. Therefore, in
this paper, we propose a novel solution for hard-decision-aided
SM/STSK detection, which retains its optimal performance,
despite its reduced detection complexity, when either LPSK
or LQAM is employed. Furthermore, we propose the reduced-
complexity Approx-Log-MAP algorithm conceived for the soft-
decision-aided SM/STSK detector, in order to replace the sub-
optimal Max-Log-MAP algorithm.
Index Terms—Spatial Modulation, Space-Time Shift Keying,
Reduced complexity design, Turbo detection.
206-216
Xu, Chao
349b7322-fd17-4fcd-a49f-c62afe284d50
Sugiura, Shinya
acb6e7ea-eb0c-4b33-82c6-da8640be4233
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
January 2013
Xu, Chao
349b7322-fd17-4fcd-a49f-c62afe284d50
Sugiura, Shinya
acb6e7ea-eb0c-4b33-82c6-da8640be4233
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xu, Chao, Sugiura, Shinya, Ng, Soon Xin and Hanzo, Lajos
(2013)
Spatial modulation and space-time shift keying: optimal performance at a reduced detection complexity.
IEEE Transactions on Communications, 61 (1), .
(doi:10.1109/TCOMM.2012.100312.120251).
Abstract
Abstract—In this paper, we propose a comprehensive reduced-
complexity detector both for hard-decision-aided as well as for
the soft-decision-assisted Spatial Modulation (SM)/Space-Time
Shift Keying (STSK). More explicitly, the detection of the SM
scheme, which activates a single one out of M antennas to
transmit a single LPSK/QAM symbol, may be carried out by
detecting the antenna activation index m and the LPSK/QAM
symbol sl separately, so that the detection complexity may be
reduced from the order of O(M · L) to the lower bound of
O(M + log2 L). However, the QAM aided STSK hard detection
proposed in [1] results in a performance loss. Furthermore, the
Max-Log-MAP algorithm proposed for soft STSK detection in [2]
only takes into account the maximum a posteriori probabilities,
which also imposed a performance degradation. Therefore, in
this paper, we propose a novel solution for hard-decision-aided
SM/STSK detection, which retains its optimal performance,
despite its reduced detection complexity, when either LPSK
or LQAM is employed. Furthermore, we propose the reduced-
complexity Approx-Log-MAP algorithm conceived for the soft-
decision-aided SM/STSK detector, in order to replace the sub-
optimal Max-Log-MAP algorithm.
Index Terms—Spatial Modulation, Space-Time Shift Keying,
Reduced complexity design, Turbo detection.
Text
TCOM-12-0251.pdf
- Other
More information
Accepted/In Press date: 13 July 2012
Published date: January 2013
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 341173
URI: http://eprints.soton.ac.uk/id/eprint/341173
PURE UUID: 033fda15-d1ec-4946-a4af-7375169f4966
Catalogue record
Date deposited: 17 Jul 2012 10:13
Last modified: 07 Oct 2020 05:50
Export record
Altmetrics
Contributors
Author:
Chao Xu
Author:
Shinya Sugiura
Author:
Soon Xin Ng
Author:
Lajos Hanzo
University divisions
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics