Belief Propagation-Based Joint Iterative Detection and Decoding Algorithm for Asynchronous IDMA Satellite Systems

Shengfeng Li, Senlin Li, Xiang Chen, Ling Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In recent years, a new emerging Interleave-Division Multiple Access (IDMA) developed from the Code-Division Multiple Access (CDMA), with its unique advantages, has been introduceded into the satellite communication systems to provide a new multi-user access solution. In IDMA satellite systems, the random distribution of the geographical locations of different user ends (UEs) within the coverage of the satellite ground spot beam will cause serious asynchronous transmission. In this case, the computational complexity of MUD will increase sharply compared to the case of synchronization. Unfortunately, although many simplified algorithms were studied, this problem is still not solved effectively. In this paper, inspired by the successful application of the Belief Propagation (BP)-based joint iterative detection and decoding algorithm in CDMA systems, we adopt this method in asynchronous IDMA satellite systems. Analysis and simulations verify that the BP-based iterative algorithm can effectively reduce the algorithm complexity and has better performance than traditional turbo iterative algorithms in the asynchronous IDMA satellite system.

Original languageEnglish
Title of host publicationIoT as a Service - 6th EAI International Conference, IoTaaS 2020, Proceedings
EditorsBo Li, Changle Li, Mao Yang, Zhongjiang Yan, Jie Zheng
PublisherSpringer Science and Business Media Deutschland GmbH
Pages655-669
Number of pages15
ISBN (Print)9783030675134
DOIs
StatePublished - 2021
Event6th EAI International Conference on IoT as a Service, IoTaaS 2020 - Xi'an, China
Duration: 19 Nov 202020 Nov 2020

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume346
ISSN (Print)1867-8211
ISSN (Electronic)1867-822X

Conference

Conference6th EAI International Conference on IoT as a Service, IoTaaS 2020
Country/TerritoryChina
CityXi'an
Period19/11/2020/11/20

Keywords

  • Asynchronous
  • Belief Propagation (BP)
  • Detection and Decoding
  • IDMA
  • Satellite systerm

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