TY - JOUR
T1 - Device-to-Device Aided Cooperative NOMA Transmission Exploiting Overheard Signal
AU - Kader, Md Fazlul
AU - Islam, S. M.Riazul
AU - Dobre, Octavia A.
N1 - Funding Information:
This work was supported in part by the National Research Foundation of Korea through the Ministry of Science, Government of Korea, under Grant ICTNRF-2020R1A2B5B02002478, in part by Sejong University through the Faculty Research Program under Grant 20212023, and in part by the Natural Sciences and Engineering Research Council of Canada (NSERC) through the Discovery Program.
Publisher Copyright:
© 2002-2012 IEEE.
PY - 2022/2/14
Y1 - 2022/2/14
N2 - A novel device-to-device (D2D) aided cooperative non-orthogonal multiple access (NOMA) scheme (termed as D2D-SG-NOMA) is proposed, where two similar gain (SG) near users (NUs) with the capability of D2D communication and one far user (FU) are served within two time slots. The NOMA pair is formed with a NU and the FU. The paired NU is employed as a decode-and-forward relay to assist FU. Contrarily, the unpaired NU can receive signals simultaneously from the base station (BS) and the other NU during the second time slot. Two different scenarios (i.e., S1 and S2) are investigated insightfully. In S1, the direct link between the BS and FU does not exist, whereas the direct link between the BS and FU exists in S2. The delay-tolerant capacity (DTC), outage probability, diversity order, and delay-limited capacity are investigated along with analytical formulation. The D2D-SG-NOMA achieves an increase of around 66% and 85% in DTC at 0 dB signal-to-noise (SNR) under S1 and S2, respectively than the existing NOMA scheme with successive relaying (termed as SR-NOMA). Contrarily, a reduced DTC improvement (i.e., around 3% and 10% in S1 and S2, respectively) is obtained at 40 dB SNR due to increased inter-symbol interference.
AB - A novel device-to-device (D2D) aided cooperative non-orthogonal multiple access (NOMA) scheme (termed as D2D-SG-NOMA) is proposed, where two similar gain (SG) near users (NUs) with the capability of D2D communication and one far user (FU) are served within two time slots. The NOMA pair is formed with a NU and the FU. The paired NU is employed as a decode-and-forward relay to assist FU. Contrarily, the unpaired NU can receive signals simultaneously from the base station (BS) and the other NU during the second time slot. Two different scenarios (i.e., S1 and S2) are investigated insightfully. In S1, the direct link between the BS and FU does not exist, whereas the direct link between the BS and FU exists in S2. The delay-tolerant capacity (DTC), outage probability, diversity order, and delay-limited capacity are investigated along with analytical formulation. The D2D-SG-NOMA achieves an increase of around 66% and 85% in DTC at 0 dB signal-to-noise (SNR) under S1 and S2, respectively than the existing NOMA scheme with successive relaying (termed as SR-NOMA). Contrarily, a reduced DTC improvement (i.e., around 3% and 10% in S1 and S2, respectively) is obtained at 40 dB SNR due to increased inter-symbol interference.
KW - delay-limited capacity
KW - delay-tolerant capacity
KW - Device-to-device
KW - non-orthogonal multiple access
KW - outage probability
KW - overheard signal
UR - http://www.scopus.com/inward/record.url?scp=85113242009&partnerID=8YFLogxK
U2 - 10.1109/TWC.2021.3103607
DO - 10.1109/TWC.2021.3103607
M3 - Article
AN - SCOPUS:85113242009
VL - 21
SP - 1304
EP - 1318
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 2
M1 - 9515575
ER -
