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Finite-cardinality single-RF differential space-time modulation for improving the diversity-throughput tradeoff

Finite-cardinality single-RF differential space-time modulation for improving the diversity-throughput tradeoff
Finite-cardinality single-RF differential space-time modulation for improving the diversity-throughput tradeoff
The matrix-based differential encoding invoked by Differential Space-Time Modulation (DSTM) typically results in an infinite-cardinality of arbitrary signals, despite the fact that the Transmit Antennas (TAs) can only radiate a limited number of patterns. As a remedy, the recently developed Differential Spatial Modulation (DSM) is capable of avoiding this problem by conceiving a beneficial sparse signal matrix design, which also facilitates low-complexity single-RF signal transmission. Inspired by this development, the Differential Space-Time Block Code using Index Shift Keying (DSTBC-ISK) further introduces a beneficial diverstiy gain without compromising the DSM's appealingly low transceiver complexity. However, the DSTBC-ISK's performance advantage tends to diminish as the throughput increases, especially when an increased number of Receive Antennas (RAs) is used. By contrast, the classic Differential Group Code (DGC) that actively maximizes its diversity gain for different Multiple-Input Multiple-Output (MIMO) system setups is capable of achieving a superior performance, but its detection complexity grows exponentially with the throughtput. Against this background, we propose the Differential Space-Time Shift Keying using Diagonal Algebraic Space-Time (DSTSK-DAST) scheme, which is the first DSTM that is capable of achieving the DGC's superior diversity gain at high throughputs without compromising the DSM's low transceiver complexity. As a further advance, we also conceive a new Differential Space-Time Shift Keying using Threaded Algebraic Space-Time (DSTSK-TAST) arrangement, which is capable of achieving an even further improved diversity gain at a substantially reduced signal detection complexity compared to the best DGCs. Furthermore, in order to strike a practical tradeoff, we develop a generic multi-element and multi-level-ring Amplitude Phase Shift Keying (APSK) design, and we also arrange for multiple reduced-size DSTM sub-blocks to be transmitted in a permuted manner, which exhibits an improved diversity-throughput tradeoff.
0090-6778
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Zhang, Peichang
ec887077-dc96-4b72-8caa-719a5a1a9ba8
Mysore Rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Ishikawa, Naoki
7330750b-e4bc-4f46-b500-e190264b2af6
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Zhang, Peichang
ec887077-dc96-4b72-8caa-719a5a1a9ba8
Mysore Rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Ishikawa, Naoki
7330750b-e4bc-4f46-b500-e190264b2af6
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xu, Chao, Zhang, Peichang, Mysore Rajashekar, Rakshith, Ishikawa, Naoki, Sugiura, Shinya, Wang, Li and Hanzo, Lajos (2018) Finite-cardinality single-RF differential space-time modulation for improving the diversity-throughput tradeoff. IEEE Transactions on Communications. (doi:10.1109/TCOMM.2018.2869812).

Record type: Article

Abstract

The matrix-based differential encoding invoked by Differential Space-Time Modulation (DSTM) typically results in an infinite-cardinality of arbitrary signals, despite the fact that the Transmit Antennas (TAs) can only radiate a limited number of patterns. As a remedy, the recently developed Differential Spatial Modulation (DSM) is capable of avoiding this problem by conceiving a beneficial sparse signal matrix design, which also facilitates low-complexity single-RF signal transmission. Inspired by this development, the Differential Space-Time Block Code using Index Shift Keying (DSTBC-ISK) further introduces a beneficial diverstiy gain without compromising the DSM's appealingly low transceiver complexity. However, the DSTBC-ISK's performance advantage tends to diminish as the throughput increases, especially when an increased number of Receive Antennas (RAs) is used. By contrast, the classic Differential Group Code (DGC) that actively maximizes its diversity gain for different Multiple-Input Multiple-Output (MIMO) system setups is capable of achieving a superior performance, but its detection complexity grows exponentially with the throughtput. Against this background, we propose the Differential Space-Time Shift Keying using Diagonal Algebraic Space-Time (DSTSK-DAST) scheme, which is the first DSTM that is capable of achieving the DGC's superior diversity gain at high throughputs without compromising the DSM's low transceiver complexity. As a further advance, we also conceive a new Differential Space-Time Shift Keying using Threaded Algebraic Space-Time (DSTSK-TAST) arrangement, which is capable of achieving an even further improved diversity gain at a substantially reduced signal detection complexity compared to the best DGCs. Furthermore, in order to strike a practical tradeoff, we develop a generic multi-element and multi-level-ring Amplitude Phase Shift Keying (APSK) design, and we also arrange for multiple reduced-size DSTM sub-blocks to be transmitted in a permuted manner, which exhibits an improved diversity-throughput tradeoff.

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DSTSK_TAST_TCOM_Accept_two_col - Accepted Manuscript
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More information

Accepted/In Press date: 5 September 2018
e-pub ahead of print date: 13 September 2018

Identifiers

Local EPrints ID: 423200
URI: http://eprints.soton.ac.uk/id/eprint/423200
ISSN: 0090-6778
PURE UUID: 41099013-e3e8-4130-9a18-5369a6c4c593
ORCID for Chao Xu: ORCID iD orcid.org/0000-0002-8423-0342
ORCID for Rakshith Mysore Rajashekar: ORCID iD orcid.org/0000-0002-7688-7539
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 19 Sep 2018 16:30
Last modified: 28 Apr 2022 02:04

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Contributors

Author: Chao Xu ORCID iD
Author: Peichang Zhang
Author: Rakshith Mysore Rajashekar ORCID iD
Author: Naoki Ishikawa
Author: Shinya Sugiura
Author: Li Wang
Author: Lajos Hanzo ORCID iD

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