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Detect-and-forward relaying aided cooperative spatial modulation for wireless networks

Detect-and-forward relaying aided cooperative spatial modulation for wireless networks
Detect-and-forward relaying aided cooperative spatial modulation for wireless networks
A novel detect-and-forward (DeF) relaying aided cooperative SM scheme is proposed, which is capable of striking a flexible tradeoff in terms of the achievable bit error ratio (BER), complexity and unequal error protection (UEP). More specifically, SM is invoked at the source node (SN) and the information bit stream is divided into two different sets: the antenna index-bits (AI-bits) as well as the amplitude and phase modulation-bits (APM-bits). By exploiting the different importance of the AI-bits and the APM-bits in SM detection, we propose three low-complexity, yet powerful relay protocols, namely the partial, the hybrid and the hierarchical modulation (HM) based DeF relaying schemes. These schemes determine the most appropriate number of bits to be re-modulated by carefully considering their potential benefits and then assigning a specific modulation scheme for relaying the message. As a further benefit, the employment of multiple radio frequency (RF) chains and the requirement of tight inter-relay synchronization (IRS) can be avoided. Moreover, by exploiting the benefits of our low-complexity relaying protocols and our inter-element interference (IEI) model, a low-complexity maximum-likelihood (ML) detector is proposed for jointly detecting the signal received both via the source-destination (SD) and relay-destination (RD) links. Additionally, an upper bound of the BER is derived for our DeF-SM scheme. Our numerical results show that the bound is asymptotically tight in the high-SNR region and the proposed schemes provide beneficial system performance improvements compared to the conventional MIMO schemes in an identical cooperative scenario.

cooperative diversity, detect-and-forward relaying, hierarchical modulation, space-time shift keying, spatial modulation
4500-4511
Yang, Ping
85579e43-72eb-41f6-a8f8-d63cd683904b
Zhang, Bo
b4357fc4-109b-4499-a865-ad0b2386c076
Xiao, Yue
10f13317-e86c-4b9e-bc7a-f7622c37ee01
Dong, Binhong
ef08fbf4-5dfb-4091-9c0c-4ae877f2daf4
Li, Shaoqian
7a1537c2-39b8-44d2-8d44-3f402e7c5b84
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Yang, Ping
85579e43-72eb-41f6-a8f8-d63cd683904b
Zhang, Bo
b4357fc4-109b-4499-a865-ad0b2386c076
Xiao, Yue
10f13317-e86c-4b9e-bc7a-f7622c37ee01
Dong, Binhong
ef08fbf4-5dfb-4091-9c0c-4ae877f2daf4
Li, Shaoqian
7a1537c2-39b8-44d2-8d44-3f402e7c5b84
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Yang, Ping, Zhang, Bo, Xiao, Yue, Dong, Binhong, Li, Shaoqian, El-Hajjar, Mohammed and Hanzo, Lajos (2013) Detect-and-forward relaying aided cooperative spatial modulation for wireless networks IEEE Transactions on Communications, 61, (11), pp. 4500-4511.

Record type: Article

Abstract

A novel detect-and-forward (DeF) relaying aided cooperative SM scheme is proposed, which is capable of striking a flexible tradeoff in terms of the achievable bit error ratio (BER), complexity and unequal error protection (UEP). More specifically, SM is invoked at the source node (SN) and the information bit stream is divided into two different sets: the antenna index-bits (AI-bits) as well as the amplitude and phase modulation-bits (APM-bits). By exploiting the different importance of the AI-bits and the APM-bits in SM detection, we propose three low-complexity, yet powerful relay protocols, namely the partial, the hybrid and the hierarchical modulation (HM) based DeF relaying schemes. These schemes determine the most appropriate number of bits to be re-modulated by carefully considering their potential benefits and then assigning a specific modulation scheme for relaying the message. As a further benefit, the employment of multiple radio frequency (RF) chains and the requirement of tight inter-relay synchronization (IRS) can be avoided. Moreover, by exploiting the benefits of our low-complexity relaying protocols and our inter-element interference (IEI) model, a low-complexity maximum-likelihood (ML) detector is proposed for jointly detecting the signal received both via the source-destination (SD) and relay-destination (RD) links. Additionally, an upper bound of the BER is derived for our DeF-SM scheme. Our numerical results show that the bound is asymptotically tight in the high-SNR region and the proposed schemes provide beneficial system performance improvements compared to the conventional MIMO schemes in an identical cooperative scenario.

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Published date: November 2013
Keywords: cooperative diversity, detect-and-forward relaying, hierarchical modulation, space-time shift keying, spatial modulation
Organisations: Mathematical Sciences, Electronics & Computer Science

Identifiers

Local EPrints ID: 358460
URI: http://eprints.soton.ac.uk/id/eprint/358460
PURE UUID: 03bfc83e-b3e9-46cc-b697-e5f887f44036
ORCID for Mohammed El-Hajjar: ORCID iD orcid.org/0000-0002-7987-1401
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 07 Oct 2013 10:17
Last modified: 27 Oct 2017 10:50

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Contributors

Author: Ping Yang
Author: Bo Zhang
Author: Yue Xiao
Author: Binhong Dong
Author: Shaoqian Li
Author: Mohammed El-Hajjar ORCID iD
Author: Lajos Hanzo ORCID iD

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