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Constant-envelope space-time shift keying

Constant-envelope space-time shift keying
Constant-envelope space-time shift keying
From the power amplifier's perspective, the Peak-to-Average Power Ratio (PAPR) is of essential importance, especially for both single-RF and reduced-RF Multiple-Input Multiple-Output (MIMO) single-carrier schemes. In this context, many of the diversity-oriented index modulation schemes - including the full-RF Space-Time Shift Keying (STSK) and the single-RF Asynchronous STSK (ASTSK) that invoke randomized signals - exhibit eroded energy-efficiency. To circumvent this problem, we propose a holistic signal construction approach for single-RF, reduced-RF and full-RF MIMO setups, which always achieve both perfect 0~dB PAPR transmission and Inter-Channel Interference (ICI) free signal detection. More explicitly, first of all, we conceive a new family of single-RF Constant-Envelope ASTSK (CE-ASTSK), which is capable of substantially outperforming conventional Spatial Modulation (SM) in both Rayleigh fading and Ricean fading associated with increasing Line-of-Sight (LoS) power. Secondly, we propose the new full-RF CE-STSK concept, which is capable of outperforming the orthogonal Space-Time Block Codes (STBCs) without either increasing PAPR or imposing ICI. This is particularly beneficial because the conventional Linear Dispersion Code (LDC) approaches always compromise the orthogonality of STBC and hence impose ICI. Thirdly, we also conceive the reduced-RF versions of CE-STSK, which outperform both Generalized Spatial Modulation (GSM) and Space-Time Block Coded Spatial Modulation (STBC-SM). Finally, the proposed schemes are intrinsically amalgamated with turbo detection assisted channel coding, which further confirms the superiority of CE-ASTSK and CE-STSK over SM and STBC in the single-RF and full-RF modes, respectively.
1387-1402
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Bai, Tong
15e00a16-2ade-4fdb-a4d9-a490a526669a
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Bai, Tong
15e00a16-2ade-4fdb-a4d9-a490a526669a
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Maunder, Robert
76099323-7d58-4732-a98f-22a662ccba6c
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xu, Chao, Bai, Tong, Zhang, Jiankang, Maunder, Robert, Sugiura, Shinya, Wang, Zhaocheng and Hanzo, Lajos (2019) Constant-envelope space-time shift keying. IEEE Journal of Selected Topics in Signal Processing, 13 (6), 1387-1402. (doi:10.1109/JSTSP.2019.2922587).

Record type: Article

Abstract

From the power amplifier's perspective, the Peak-to-Average Power Ratio (PAPR) is of essential importance, especially for both single-RF and reduced-RF Multiple-Input Multiple-Output (MIMO) single-carrier schemes. In this context, many of the diversity-oriented index modulation schemes - including the full-RF Space-Time Shift Keying (STSK) and the single-RF Asynchronous STSK (ASTSK) that invoke randomized signals - exhibit eroded energy-efficiency. To circumvent this problem, we propose a holistic signal construction approach for single-RF, reduced-RF and full-RF MIMO setups, which always achieve both perfect 0~dB PAPR transmission and Inter-Channel Interference (ICI) free signal detection. More explicitly, first of all, we conceive a new family of single-RF Constant-Envelope ASTSK (CE-ASTSK), which is capable of substantially outperforming conventional Spatial Modulation (SM) in both Rayleigh fading and Ricean fading associated with increasing Line-of-Sight (LoS) power. Secondly, we propose the new full-RF CE-STSK concept, which is capable of outperforming the orthogonal Space-Time Block Codes (STBCs) without either increasing PAPR or imposing ICI. This is particularly beneficial because the conventional Linear Dispersion Code (LDC) approaches always compromise the orthogonality of STBC and hence impose ICI. Thirdly, we also conceive the reduced-RF versions of CE-STSK, which outperform both Generalized Spatial Modulation (GSM) and Space-Time Block Coded Spatial Modulation (STBC-SM). Finally, the proposed schemes are intrinsically amalgamated with turbo detection assisted channel coding, which further confirms the superiority of CE-ASTSK and CE-STSK over SM and STBC in the single-RF and full-RF modes, respectively.

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CE_STSK_Revision_two_col_v2 - Accepted Manuscript
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More information

Accepted/In Press date: 6 June 2019
e-pub ahead of print date: 12 June 2019
Published date: October 2019

Identifiers

Local EPrints ID: 431697
URI: http://eprints.soton.ac.uk/id/eprint/431697
PURE UUID: 023a8217-3846-4753-bb1e-63b2d3b31062
ORCID for Chao Xu: ORCID iD orcid.org/0000-0002-8423-0342
ORCID for Jiankang Zhang: ORCID iD orcid.org/0000-0001-5316-1711
ORCID for Robert Maunder: ORCID iD orcid.org/0000-0002-7944-2615
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 13 Jun 2019 16:30
Last modified: 18 Feb 2021 17:16

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