TY - GEN
T1 - Cache-Aided Non-Orthogonal Multiple Access over Fading Channels in Downlink Cellular Networks
AU - Mohan, Shreshta
AU - Morgansgate, Shreya
AU - Basket, Priyadarshini
AU - Gurugopinath, Sanjeev
AU - Muhaidat, Sami
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - Integration of caching and non-orthogonal multiple access (NOMA) is envisioned to enhance the spectral efficiency in cellular networks. In this paper, we study the performance of cache-aided NOMA over various fading downlink channels, namely Weibull, Nakagami and Rician channels. In particular, we consider a cache-equipped two-user cellular network and propose an optimization problem to find the optimal power control policy such that the probability of successful decoding of files at the network is maximized, for each of the fading models. Through extensive Monte Carlo simulations and numerical results, we validate the analytically derived expressions for optimal power allocation, and show that the cache-aided NOMA scheme outperforms both conventional NOMA and cache-aided orthogonal multiple access schemes, in terms of probability of successful decoding of files at each user.
AB - Integration of caching and non-orthogonal multiple access (NOMA) is envisioned to enhance the spectral efficiency in cellular networks. In this paper, we study the performance of cache-aided NOMA over various fading downlink channels, namely Weibull, Nakagami and Rician channels. In particular, we consider a cache-equipped two-user cellular network and propose an optimization problem to find the optimal power control policy such that the probability of successful decoding of files at the network is maximized, for each of the fading models. Through extensive Monte Carlo simulations and numerical results, we validate the analytically derived expressions for optimal power allocation, and show that the cache-aided NOMA scheme outperforms both conventional NOMA and cache-aided orthogonal multiple access schemes, in terms of probability of successful decoding of files at each user.
UR - http://www.scopus.com/inward/record.url?scp=85082175509&partnerID=8YFLogxK
U2 - 10.1109/COMSNETS48256.2020.9027460
DO - 10.1109/COMSNETS48256.2020.9027460
M3 - Conference contribution
AN - SCOPUS:85082175509
T3 - 2020 International Conference on COMmunication Systems and NETworkS, COMSNETS 2020
SP - 452
EP - 459
BT - 2020 International Conference on COMmunication Systems and NETworkS, COMSNETS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 International Conference on COMmunication Systems and NETworkS, COMSNETS 2020
Y2 - 7 January 2020 through 11 January 2020
ER -