Research Article
Preamble Design for Collision Detection and Channel Estimation in Machine-Type Communication
@INPROCEEDINGS{10.1007/978-3-319-66628-0_28, author={Shilei Zheng and Fanggang Wang and Xia Chen}, title={Preamble Design for Collision Detection and Channel Estimation in Machine-Type Communication}, proceedings={Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II}, proceedings_a={CHINACOM}, year={2017}, month={10}, keywords={Asynchronization Contention-based random access Collision detection Channel estimation Preamble}, doi={10.1007/978-3-319-66628-0_28} }- Shilei Zheng
Fanggang Wang
Xia Chen
Year: 2017
Preamble Design for Collision Detection and Channel Estimation in Machine-Type Communication
CHINACOM
Springer
DOI: 10.1007/978-3-319-66628-0_28
Abstract
Preamble is widely used for initial synchronization, channel estimation, user identification, and collision detection in communication systems. For machine-type communication (MTC), there are massive machines within one cell. Contention-based random access could be a candidate protocol in this scenario. However, simultaneous transmission of multiple users can lead to signal aliasing. This paper designs a novel structure of preamble. Collisions of multiple users can be detected based on well-designed structure of the preamble. Furthermore, channel state information (CSI) can be estimated as a byproduct in the process of collision detection. We claim that the proposed preambles applies in flat-fading channel, multipath channel and asynchronous scenario. The simulation results validate the accuracy and robustness of the proposed scheme.