Research Article
T-SCMA: Time Domain Sparse Code Multiple Access for Narrow Band Internet of Things (NB-IoT) (Invited Paper)
@INPROCEEDINGS{10.1007/978-3-030-00410-1_43, author={Zhenzhen Yan and Bo Li and Mao Yang and Zhongjiang Yan and Zhicheng Bai}, title={T-SCMA: Time Domain Sparse Code Multiple Access for Narrow Band Internet of Things (NB-IoT) (Invited Paper)}, proceedings={IoT as a Service. Third International Conference, IoTaaS 2017, Taichung, Taiwan, September 20--22, 2017, Proceedings}, proceedings_a={IOTAAS}, year={2018}, month={10}, keywords={Internet of Things Sparse code multiple access NB-IoT Connectivity Network capacity}, doi={10.1007/978-3-030-00410-1_43} }- Zhenzhen Yan
Bo Li
Mao Yang
Zhongjiang Yan
Zhicheng Bai
Year: 2018
T-SCMA: Time Domain Sparse Code Multiple Access for Narrow Band Internet of Things (NB-IoT) (Invited Paper)
IOTAAS
Springer
DOI: 10.1007/978-3-030-00410-1_43
Abstract
Nowadays the development of internet of things (IoT) has become the next major growth point of wireless communication. And narrow band has become a new trend in the development of IoT. Achieving massive connectivity and ever-increasing network capacity has become an important subject of our research. We find that sparse code multiple access (SCMA), a type of non-orthogonal multiple access, is supposed to meet these needs, but it can hardly apply to NB-IoT because narrow band does not have the ability of spread spectrum. On this basis, we introduce SCMA into time domain, named T-SCMA, for NB-IoT. By multiplexing SCMA in the time domain and defining a MAC frame structure, we can significantly improve both connectivity and network capacity, ultimately obtain a much higher throughput property gain over time division multiple address (TDMA).