Fading-Averaged Spectral Efficiency Analysis of Millimeter Wave Communication Links over Nakagami Fading Channels

Wedged between microwave and infrared waves, the millimeter Wave (mmWave) spectrum can be used for high-speed fifth generation (5G) wireless communications. In this paper, we consider a mmWave wireless link via small scale and large scale fading channels. We investigate the average spectral efficiency performance of the mmWave wireless channel and also evaluate average interference by deriving a tractable approximation for it. Specifically, we derive analytical expressions for the fading-averaged spectral efficiency (FSE) and study its behavior in various scenarios, and for different system parameters. Furthermore, we also obtain upper bound for the average spectral efficiency. To quantify the spectral efficiency performance, we perform numerical simulations and interpret the results qualitatively. The analysis that we develop is useful for mmWave communication systems and networks.