Abstract
With the increasing development of cellular internet of things (IoT), the upcoming fifth generation (5G) wireless network is required to support massive IoT with sporadic traffic. In order to realize massive access over limited radio spectrum, a three-phase transmission protocol which consists of device detection and channel estimation, uplink data transmission and downlink data transmission is designed for the cellular IoT. In particular, we analyze the performance of the proposed transmission protocol, and reveal the impact of system parameters on the sum rate. Finally, simulation results validate the effectiveness of the theoretical claims.
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