Abstract
5G new radio provides support for flexibility and scalability in the form of multiple numerologies and the air interface to meet the different use case scenarios that were proposed by International Mobile Telecommunications-2020. Broadly physical channels are categorized into the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH), and the physical uplink shared channel (PUSCH). Among these PDSCH is proposed for downlink shared channel that supports multiple numerologies and flexibility in modulation scheme. In this paper, an assessment of PDSCH throughput is presented on several sub carrier spacing (SCS) and modulation schemes. A comparative study of throughput and signal-to-noise ratio (SNR) is also carried out that indicates the impact on throughput due to a complex modulation scheme. Based on experimental evaluations, it can be stated that 16-QAM outperformed, 64 and 256-QAMs on 120 kHz SCS which indicates a significant improvement in the PDSCH throughput.
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