TY - JOUR
T1 - Coverage Performance of NOMA in Wireless Caching Networks
AU - Zhao, Zhongyuan
AU - Xu, Mingfeng
AU - Xie, Weiliang
AU - Ding, Zhiguo
AU - Karagiannidis, George K.
PY - 2018/4/26
Y1 - 2018/4/26
N2 - In order to keep a balance between the transmission delay of backhaul and the spectrum efficiency of access links, the coverage performance of wireless networks with non-orthogonal multiple access (NOMA) and content caching is studied. First, an explicit expression for the coverage probability of a typical user is presented by using stochastic geometry and order statistics. This expression can provide useful insights in order to improve the coverage performance of NOMA communications. Second, a closed-form expression for the average coverage probability is derived. Finally, simulation results are provided to validate the accuracy of the analytical framework and demonstrate the performance gain, due to NOMA.
AB - In order to keep a balance between the transmission delay of backhaul and the spectrum efficiency of access links, the coverage performance of wireless networks with non-orthogonal multiple access (NOMA) and content caching is studied. First, an explicit expression for the coverage probability of a typical user is presented by using stochastic geometry and order statistics. This expression can provide useful insights in order to improve the coverage performance of NOMA communications. Second, a closed-form expression for the average coverage probability is derived. Finally, simulation results are provided to validate the accuracy of the analytical framework and demonstrate the performance gain, due to NOMA.
KW - content caching
KW - coverage probability
KW - Non-orthogonal multiple access (NOMA)
KW - stochastic geometry
UR - http://www.scopus.com/inward/record.url?scp=85045990097&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2018.2830376
DO - 10.1109/LCOMM.2018.2830376
M3 - Article
AN - SCOPUS:85045990097
SN - 1089-7798
JO - IEEE Communications Letters
JF - IEEE Communications Letters
ER -