A suboptimal resource allocation algorithm for OFDMA-based multi-hop cellular networks

Zheng Xiang, Xuming Fang, Jiannong Cao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Orthogonal frequency division multiple access (OFDMA)-based multi-hop cellular networks, benefited from the relay and OFDM technologies, have a lot of advantages over traditional wireless cellular networks including better network coverage via relay station (RS), the flexibility and adaptation in radio resource allocation. In this paper, the radio resource allocation for wireless relay links in OFDMA-based multi-hop cellular networks is investigated. The topology of an OFDMA-based multi-hop cellular network is described as a hierarchical tree configuration, upon which a throughput-oriented objective function is formulated and the constraints including link proportional fairness are imposed. In order to maximize throughput with a low complexity, a suboptimal algorithm is proposed to optimize allocation of subcarriers and related powers. Simulation results show that when compared to fix resource allocation schemes such as OFDM-time division multiple access (TDMA), the proposed algorithm can significantly improve the network capacity while maintain the link proportionality of the network.
Original languageEnglish
Title of host publicationMSN 2009 - 5th International Conference on Mobile Ad-hoc and Sensor Networks
Pages396-402
Number of pages7
DOIs
Publication statusPublished - 1 Dec 2009
Event5th International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2009 - Fujian Province, China
Duration: 14 Dec 200916 Dec 2009

Conference

Conference5th International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2009
Country/TerritoryChina
CityFujian Province
Period14/12/0916/12/09

Keywords

  • Link proportionality
  • Multi-hop cellular network
  • OFDMA
  • Resource allocation

ASJC Scopus subject areas

  • Computer Networks and Communications

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