https://scholars.lib.ntu.edu.tw/handle/123456789/580934
標題: | Minimizing NOMA Resource Usage for Cellular IoT Networks through Distributed Source Coding | 作者: | Lin E.-Y Wu S.-C. HUNG-YUN HSIEH |
關鍵字: | Mobile telecommunication systems; Network coding; Distributed source coding; Machine type communications; Maximum weight matching; Mobile broadband; Pairing algorithms; Performance metrices; Power allocations; Resource optimization problem; Internet of things | 公開日期: | 2020 | 來源出版物: | 2020 IEEE Global Communications Conference, GLOBECOM 2020 - Proceedings | 摘要: | Many research endeavors to optimize the performance of NOMA (non-orthogonal multiple access) have focused on mobile broadband applications, where transmissions typically occur in the downlink with full-buffered traffic and the primary performance metric is the sum date rates. Machine-type communications, however, are distinctly different, where transmissions typically occur in the uplink and traffic load from individual machines is low with short payloads. To optimize NOMA performance for resource-constrained cellular IoT (Internet of Things) networks, in this paper we investigate a problem to minimize total radio resource used by all IoT devices for sending the collected data to the base station. By employing distributed source coding (DSC) between the two nodes in a NOMA pair, we first solve the resource optimization problem of a two-node pair through joint data and power allocation. With the calculated resource usage of two nodes in OMA and NOMA, we then construct a weighted graph and investigate maximum weight matching for pairing IoT devices in the network with minimum total resource usage. We compare different pairing algorithms for solving the problem while striking a good balance between complexity and optimality. Simulation results show that DSC can achieve significant performance gain for NOMA resource usage compared to the baseline approaches in cellular IoT networks. ? 2020 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100436093&doi=10.1109%2fGLOBECOM42002.2020.9322195&partnerID=40&md5=7f26ce461fd96ff5c4e5a9d8b8bb2e0a https://scholars.lib.ntu.edu.tw/handle/123456789/580934 |
DOI: | 10.1109/GLOBECOM42002.2020.9322195 |
顯示於: | 電機工程學系 |
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