Average Block Error Rate of Downlink NOMA Short-Packet Communication Systems in Nakagami- $m$ Fading Channels

Short-packet communication systems provide low latency communications in fifth-generation wireless cellular networks. In this letter, we study the average block error rate (BLER) of downlink non-orthogonal multiple access (NOMA) short-packet communication systems. By invoking stochastic geometry, we consider that the locations of NOMA users are uniformly distributed in a disc and theoretically derive the analytical expressions for average BLER in Nakagami-<inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> fading channels. Numerical results illustrate that our theoretically derived analytical average BLERs are almost the same as the simulation results.

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