NOMA Versus Massive MIMO in Rayleigh Fading
2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)(2019)
摘要
This paper compares the sum rates and rate regions achieved by power-domain NOMA (non-orthogonal multiple access) and standard massive MIMO (multiple-input multiple-output) techniques. We prove analytically that massive MIMO always outperforms NOMA in i.i.d. Rayleigh fading channels, if a sufficient number of antennas are used at the base stations. The simulation results show that the crossing point occurs already when having 20-30 antennas, which is far less than what is considered for the next generation cellular networks.
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关键词
Massive MIMO,NOMA,non-line-of-sight
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