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Transmit antenna combination optimization for generalized spatial modulation systems

Transmit antenna combination optimization for generalized spatial modulation systems
Transmit antenna combination optimization for generalized spatial modulation systems

Generalized Spatial Modulation (GSM), where both the Transmit Antenna Combination (TAC) index and the Amplitude Phase Modulation (APM) symbols convey information, is a novel low-complexity and high efficiency Multiple Input Multiple Output (MIMO) technique. In Conventional GSM (C-GSM), the legitimate TACs are selected randomly to transmit the APM symbols. However, the number of the TACs must be a power of two, hence the excess TACs are discarded, resulting in wasting some resource. To address these issues, in this paper, an optimal TAC set-aided Enhanced GSM (E-GSM) scheme is proposed, where the optimal TAC set is selected with the aid of the Channel State Information (CSI) by maximizing the Minimum Euclidean Distance (MED). Furthermore, a Hybrid Mapping GSM (HM-GSM) scheme operating without CSI knowledge is investigated, where the TAC selection and bit-to-TAC mapping are both taken into consideration for optimizing the Average Hamming Distance (AHD). Finally, an Enhanced High Throughput GSM (E-HT-GSM) scheme is developed, which makes full use of all the TACs. This scheme is capable of achieving an extra one bit transmission rate per time slot. Moreover, rotated phase is employed and optimized for the reused TACs. Our simulation results show that the proposed E-GSM system and HM-GSM system are capable of outperforming the CGSM system. Furthermore, the E-HT-GSM system is capable of obtaining one extra bit transmission rate per time slot compared to the C-GSM system.

Average Hamming Distance (AHD), Generalized Spatial Modulation (GSM), Transmit Antennas Combination (TACs)
2169-3536
1-15
Xiao, Lixia
a318fd47-27b8-4a8a-98d5-26bc9333c589
Xiao, Pei
48e5c554-b0e2-41a9-bf48-546628bc4bcc
Xiao, Yue
10f13317-e86c-4b9e-bc7a-f7622c37ee01
Wu, Chaowu
631a3d11-4ddd-49a4-bda3-8cea78dcc5ef
Nguyen, Hung Viet
6f5a71ef-ea98-49e0-9be7-7f5bb9880f52
Hemadeh, Ibrahim
85d15823-4e4c-421f-a952-df6cff05df0f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xiao, Lixia
a318fd47-27b8-4a8a-98d5-26bc9333c589
Xiao, Pei
48e5c554-b0e2-41a9-bf48-546628bc4bcc
Xiao, Yue
10f13317-e86c-4b9e-bc7a-f7622c37ee01
Wu, Chaowu
631a3d11-4ddd-49a4-bda3-8cea78dcc5ef
Nguyen, Hung Viet
6f5a71ef-ea98-49e0-9be7-7f5bb9880f52
Hemadeh, Ibrahim
85d15823-4e4c-421f-a952-df6cff05df0f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xiao, Lixia, Xiao, Pei, Xiao, Yue, Wu, Chaowu, Nguyen, Hung Viet, Hemadeh, Ibrahim and Hanzo, Lajos (2018) Transmit antenna combination optimization for generalized spatial modulation systems. IEEE Access, 1-15. (doi:10.1109/ACCESS.2018.2859794).

Record type: Article

Abstract

Generalized Spatial Modulation (GSM), where both the Transmit Antenna Combination (TAC) index and the Amplitude Phase Modulation (APM) symbols convey information, is a novel low-complexity and high efficiency Multiple Input Multiple Output (MIMO) technique. In Conventional GSM (C-GSM), the legitimate TACs are selected randomly to transmit the APM symbols. However, the number of the TACs must be a power of two, hence the excess TACs are discarded, resulting in wasting some resource. To address these issues, in this paper, an optimal TAC set-aided Enhanced GSM (E-GSM) scheme is proposed, where the optimal TAC set is selected with the aid of the Channel State Information (CSI) by maximizing the Minimum Euclidean Distance (MED). Furthermore, a Hybrid Mapping GSM (HM-GSM) scheme operating without CSI knowledge is investigated, where the TAC selection and bit-to-TAC mapping are both taken into consideration for optimizing the Average Hamming Distance (AHD). Finally, an Enhanced High Throughput GSM (E-HT-GSM) scheme is developed, which makes full use of all the TACs. This scheme is capable of achieving an extra one bit transmission rate per time slot. Moreover, rotated phase is employed and optimized for the reused TACs. Our simulation results show that the proposed E-GSM system and HM-GSM system are capable of outperforming the CGSM system. Furthermore, the E-HT-GSM system is capable of obtaining one extra bit transmission rate per time slot compared to the C-GSM system.

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Accepted/In Press date: 25 July 2018
e-pub ahead of print date: 25 July 2018
Keywords: Average Hamming Distance (AHD), Generalized Spatial Modulation (GSM), Transmit Antennas Combination (TACs)

Identifiers

Local EPrints ID: 423084
URI: http://eprints.soton.ac.uk/id/eprint/423084
ISSN: 2169-3536
PURE UUID: a65054eb-9f23-4673-8d85-1fd2c606f444
ORCID for Hung Viet Nguyen: ORCID iD orcid.org/0000-0001-6349-1044
ORCID for Ibrahim Hemadeh: ORCID iD orcid.org/0000-0002-1422-0333
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 14 Aug 2018 16:30
Last modified: 07 Oct 2020 05:16

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Contributors

Author: Lixia Xiao
Author: Pei Xiao
Author: Yue Xiao
Author: Chaowu Wu
Author: Hung Viet Nguyen ORCID iD
Author: Ibrahim Hemadeh ORCID iD
Author: Lajos Hanzo ORCID iD

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