Study of Joint Power-Domain and Sparse Code Multiple Access for Uplink Grant-Free Systems

Abstract

Although not been accepted explicitly by 3GPP current standard non-orthogonal multiple access (NOMA) technique a promising candidate to improve the spectrum efficiency and provide more access resources for mMTC applications To support the needed of the scenario in 5G ultra-reliable and low latency communications (uRLLC) and massive machine type communications (mMTC) uplink grant-free transmission based on SCMA has been proposed Recently hybrid power domain sparse code (or joint power and code domain) non-orthogonal multiple access (called PD-SCMA or PSMA) was proposed to further improve the spectrum efficiency This thesis explore the partial system design for the uplink grant-free multiple access based on hybrid power domain sparse code non-orthogonal multiple access (PD-SCMA or PSMA) to support low latency (for uRLLC) and provide more access resources (for mMTC or IoT) on uplink The whole system design includes successive interference cancellation (SIC) multi-user data decoding power control strategy and channel coding based on correct codebook (CB) detection perfect channel state information (CSI)

Date of Award	2020
Original language	English
Supervisor	Szu-Lin Su (Supervisor)