TY - GEN
T1 - Diversity analysis of HARQ-CC-aided NOMA
AU - Shi, Zheng
AU - Zhang, Chenmeng
AU - Fu, Yaru
AU - Wang, Hong
AU - Yang, Guanghua
AU - Ma, Shaodan
N1 - Funding Information:
The corresponding author is Guanghua Yang. This work was supported in part by the National Key Research and Development Program of China under Grant 2017YFE0120600, in part by National Natural Science Foundation of China under Grants 61801192, 61801246 and 61601524, in part by the Science and Technology Planning Project of Guangdong Province under Grant 2018B010114002, in part by the Macau Science and Technology Development Fund under Grant 020/2015/AMJ, in part by Natural Science Foundation of Jiangsu Province Grant BK20170910, and in part by the Research Committee of University of Macau under Grant MYRG2018-00156-FST.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - The combination between non-orthogonal multiple access (NOMA) and hybrid automatic repeat request (HARQ) is capable of realizing ultra-reliability, high throughput and massive concurrent connections particularly for emerging communication systems. This paper focuses on characterizing the asymptotic scaling law of the outage probability of the HARQ with chase combining (HARQ-CC)-aided downlink NOMA scheme with respect to the transmit power, i.e., diversity order. The diversity order of the two- user HARQ-CC-aided NOMA system is derived in closed-form, where an integration domain partition trick is developed to obtain the upper and lower bounds of the outage probability. The analytical results show that the diversity order is a decreasing step function of transmission rate given the ratio between the transmit powers allocated to the two users. Moreover, full time diversity can only be achieved under a sufficiently low transmission rate. Additionally, the users' diversity orders follow a descending order according to their respective average channel gains. Monte Carlo simulations finally confirm the analysis.
AB - The combination between non-orthogonal multiple access (NOMA) and hybrid automatic repeat request (HARQ) is capable of realizing ultra-reliability, high throughput and massive concurrent connections particularly for emerging communication systems. This paper focuses on characterizing the asymptotic scaling law of the outage probability of the HARQ with chase combining (HARQ-CC)-aided downlink NOMA scheme with respect to the transmit power, i.e., diversity order. The diversity order of the two- user HARQ-CC-aided NOMA system is derived in closed-form, where an integration domain partition trick is developed to obtain the upper and lower bounds of the outage probability. The analytical results show that the diversity order is a decreasing step function of transmission rate given the ratio between the transmit powers allocated to the two users. Moreover, full time diversity can only be achieved under a sufficiently low transmission rate. Additionally, the users' diversity orders follow a descending order according to their respective average channel gains. Monte Carlo simulations finally confirm the analysis.
KW - Diversity order
KW - HARQ with chase combining
KW - Non-orthogonal multiple access
UR - http://www.scopus.com/inward/record.url?scp=85081951491&partnerID=8YFLogxK
U2 - 10.1109/GLOBECOM38437.2019.9013323
DO - 10.1109/GLOBECOM38437.2019.9013323
M3 - Conference contribution
AN - SCOPUS:85081951491
T3 - 2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings
BT - 2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings
T2 - 2019 IEEE Global Communications Conference, GLOBECOM 2019
Y2 - 9 December 2019 through 13 December 2019
ER -