Outage capacity and source distortion analysis for NOMA users in 5G systems

摘要

This Letter analyses the impact of the outage probability on the outage capacity and the expected source distortion of information transmission to non-orthogonal multiple access (NOMA) users with a fixed set of power allocation coefficients. The analysis shows that the outage probability at which a strong user experiences the maximum outage capacity (and the minimum expected distortion) is characteristically different from that of a weak user. Moreover, the outage probability that maximises the outage capacity does not provide the minimum source distortion for both users. The analysis is validated against simulation.