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Performance analysis of NOMA-SM in vehicle-to-vehicle massive MIMO channels

Performance analysis of NOMA-SM in vehicle-to-vehicle massive MIMO channels
Performance analysis of NOMA-SM in vehicle-to-vehicle massive MIMO channels
At the time of writing, vehicle-to-vehicle (V2V) communication is enjoying substantial research attention as a benefit of its compelling applications. However, the ever-increasing teletraffic is expected to result in overcrowding of the available band. As a first resort, multiple-input multiple-output (MIMO) can be utilized to enhance the attainable bandwidth efficiency or link reliability. However, in hostile V2V wireless propagation environments the achievable multiple-antenna gain is eroded by the channel correlation. As a promising MIMO technique, spatial modulation (SM) only activates a single transmit antenna (TA) in any symbol-interval and hence completely avoids the inter-antenna interference (IAI), hence showing robustness against channel correlation. As a further powerful solution, non-orthogonal multiple access (NOMA) has been proposed for improving the bandwidth efficiency. Inspired by the robustness of SM against channel correlation and the benefits of NOMA, we intrinsically amalgamate them into NOMA-SM in order to deal with the deleterious effects of wireless V2V environments as well as to support improved bandwidth efficiency. Moreover, the bandwidth efficiency of NOMA-SM is further boosted with the aid of a massive TA configuration. Specifically, a spatiotemporally correlated Rician channel is considered for a V2V scenario. We investigate the bit error ratio (BER) performance of NOMA-SM via Monte Carlo simulations, where the impact of the Rician K-factor, spatial correlation of the antenna array, time-varying effect of the V2V channel, and the power allocation factor is discussed. Furthermore, we also analyse the capacity of NOMA-SM. By analysing the capacity and deriving closedform upper bounds on the capacity, a pair of power allocation optimization schemes are formulated. The optimal solutions are demonstrated to be achievable with the aid of our proposed algorithm. Again, instead of simply invoking a pair of popular techniques, we intrinsically amalgamate SM and NOMA to conceive a new system component exhibiting distinct benefits in the V2V scenarios considered.
0733-8716
Chen, Yingyang
c99cf484-f0dc-43c9-af63-ed71b0fc528f
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Ai, Yutong
99e6f487-898d-4aec-a96c-1881210cea62
Jiao, Bingli
ea28bae6-0ea0-4dd7-b800-9326a43c4089
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Chen, Yingyang
c99cf484-f0dc-43c9-af63-ed71b0fc528f
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Ai, Yutong
99e6f487-898d-4aec-a96c-1881210cea62
Jiao, Bingli
ea28bae6-0ea0-4dd7-b800-9326a43c4089
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Chen, Yingyang, Wang, Li, Ai, Yutong, Jiao, Bingli and Hanzo, Lajos (2017) Performance analysis of NOMA-SM in vehicle-to-vehicle massive MIMO channels. IEEE Journal on Selected Areas in Communications. (doi:10.1109/JSAC.2017.2726006).

Record type: Article

Abstract

At the time of writing, vehicle-to-vehicle (V2V) communication is enjoying substantial research attention as a benefit of its compelling applications. However, the ever-increasing teletraffic is expected to result in overcrowding of the available band. As a first resort, multiple-input multiple-output (MIMO) can be utilized to enhance the attainable bandwidth efficiency or link reliability. However, in hostile V2V wireless propagation environments the achievable multiple-antenna gain is eroded by the channel correlation. As a promising MIMO technique, spatial modulation (SM) only activates a single transmit antenna (TA) in any symbol-interval and hence completely avoids the inter-antenna interference (IAI), hence showing robustness against channel correlation. As a further powerful solution, non-orthogonal multiple access (NOMA) has been proposed for improving the bandwidth efficiency. Inspired by the robustness of SM against channel correlation and the benefits of NOMA, we intrinsically amalgamate them into NOMA-SM in order to deal with the deleterious effects of wireless V2V environments as well as to support improved bandwidth efficiency. Moreover, the bandwidth efficiency of NOMA-SM is further boosted with the aid of a massive TA configuration. Specifically, a spatiotemporally correlated Rician channel is considered for a V2V scenario. We investigate the bit error ratio (BER) performance of NOMA-SM via Monte Carlo simulations, where the impact of the Rician K-factor, spatial correlation of the antenna array, time-varying effect of the V2V channel, and the power allocation factor is discussed. Furthermore, we also analyse the capacity of NOMA-SM. By analysing the capacity and deriving closedform upper bounds on the capacity, a pair of power allocation optimization schemes are formulated. The optimal solutions are demonstrated to be achievable with the aid of our proposed algorithm. Again, instead of simply invoking a pair of popular techniques, we intrinsically amalgamate SM and NOMA to conceive a new system component exhibiting distinct benefits in the V2V scenarios considered.

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Accepted/In Press date: 20 May 2017
e-pub ahead of print date: 12 July 2017
Additional Information: This in AM in publisher template.

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Local EPrints ID: 413111
URI: https://eprints.soton.ac.uk/id/eprint/413111
ISSN: 0733-8716
PURE UUID: 95003721-cead-4e7d-8908-09f00d26ebd2
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 15 Aug 2017 16:30
Last modified: 14 Mar 2019 01:55

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Contributors

Author: Yingyang Chen
Author: Li Wang
Author: Yutong Ai
Author: Bingli Jiao
Author: Lajos Hanzo ORCID iD

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