Optimal Preamble Design in Spatial Group-Based Random Access for Satellite-M2M Communications

Li Zhen, Hao Qin, Qian Zhang, Zheng Chu, Guangyue Lu, Jing Jiang, Mohsen Guizani

Research output: Journal PublicationArticlepeer-review

12 Citations (Scopus)


Satellite communication is expected to play a pivotal role in supporting the ubiquitous machine-to-machine (M2M) connection. Due to its wide beam coverage, however, one of the major challenges is to accommodate massive and concurrent M2M random access (RA) requests with the guarantee of human-to-human communications. To tackle this challenge, an enhanced spatial group-based RA scheme is presented from the viewpoint of preamble design. By leveraging a large-capacity RA preamble set configured with only a single root Zadoff-Chu sequence and strictly constrained cyclic shift offset set, it can effectively eliminate non-orthogonal interference and achieve the robustness to location estimation error in preamble detection procedure. Simulation results demonstrate that the proposed scheme offers an outstanding detection performance improvement, and can accommodate a significantly larger number of M2M devices while having a notably reduced collision probability and access delay, in comparison with the conventional one.

Original languageEnglish
Article number8651390
Pages (from-to)953-956
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number3
Publication statusPublished - Jun 2019
Externally publishedYes


  • machine-to-machine (M2M) communications
  • preamble design
  • random access
  • Satellite
  • spatial group

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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