On energy harvesting of hybrid TDMA-NOMA systems

TY - GEN

T1 - On energy harvesting of hybrid TDMA-NOMA systems

AU - Al-Obiedollah, Haitham

AU - Cumanan, Kanapathippillai

AU - Burr, Alister G.

AU - Tang, Jie

AU - Rahulamathavan, Yogachandran

AU - DIng, Zhiguo

AU - Dobre, Octavia A.

N1 - Funding Information: The work of H. Al-Obiedollah was supported by The Hashemite University, Jordan. The work of K. Cumanan, A. Burr and Z. Ding was supported by H2020-MSCA-RISE-2015 under grant no: 690750. The work of Y. Rahulamathavan was supported by UK-India Education Research Initiative (UKIERI) through grant UGC-UKIERI-2016-17-019. Publisher Copyright: © 2019 IEEE.

PY - 2019/12

Y1 - 2019/12

N2 - In this paper, we investigate energy harvesting capabilities of non-orthogonal multiple access (NOMA) scheme integrated with the conventional time division multiple access (TDMA) scheme, which is referred to as hybrid TDMA-NOMA system. In a such hybrid scheme, users are divided into a number of groups, with the total time allocated for transmission is shared between these groups through multiple time slots. In particular, a time slot is assigned to serve each group, whereas the users in the corresponding group are served based on power-domain NOMA technique. Furthermore, simultaneous wireless power and information transfer technique is utilized to simultaneously harvest energy and decode information at each user. Therefore, each user splits the received signal into two parts, namely, energy harvesting part and information decoding part. In particular, we jointly determine the power allocation and power splitting ratios for all users to minimize the transmit power under minimum rate and minimum energy harvesting requirements at each user. Furthermore, this joint design is a non-convex problem in nature. Hence, we employ successive interference cancellation to overcome these non- convexity issues and determine the design parameters (i.e., the power allocations and the power splitting ratios). In simulation results, we demonstrate the performance of the proposed hybrid TDMA-NOMA design and show that it outperforms the conventional TDMA scheme in terms of transmit power consumption.

AB - In this paper, we investigate energy harvesting capabilities of non-orthogonal multiple access (NOMA) scheme integrated with the conventional time division multiple access (TDMA) scheme, which is referred to as hybrid TDMA-NOMA system. In a such hybrid scheme, users are divided into a number of groups, with the total time allocated for transmission is shared between these groups through multiple time slots. In particular, a time slot is assigned to serve each group, whereas the users in the corresponding group are served based on power-domain NOMA technique. Furthermore, simultaneous wireless power and information transfer technique is utilized to simultaneously harvest energy and decode information at each user. Therefore, each user splits the received signal into two parts, namely, energy harvesting part and information decoding part. In particular, we jointly determine the power allocation and power splitting ratios for all users to minimize the transmit power under minimum rate and minimum energy harvesting requirements at each user. Furthermore, this joint design is a non-convex problem in nature. Hence, we employ successive interference cancellation to overcome these non- convexity issues and determine the design parameters (i.e., the power allocations and the power splitting ratios). In simulation results, we demonstrate the performance of the proposed hybrid TDMA-NOMA design and show that it outperforms the conventional TDMA scheme in terms of transmit power consumption.

KW - Energy harvesting

KW - Hybrid TDMA-NOMA

KW - Non-orthogonal multiple access (NOMA)

KW - Simultaneous wireless power and information transfer (SWIPT)

KW - Time division multiple access (TDMA)

UR - http://www.scopus.com/inward/record.url?scp=85072555026&partnerID=8YFLogxK

U2 - 10.1109/GLOBECOM38437.2019.9013805

DO - 10.1109/GLOBECOM38437.2019.9013805

M3 - Conference contribution

AN - SCOPUS:85072555026

T3 - 2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings

BT - 2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2019 IEEE Global Communications Conference, GLOBECOM 2019

Y2 - 9 December 2019 through 13 December 2019

ER -