Interference management using frequency planning in an OFDMA based wireless network

Chun Nie, Pei Liu, Shivendra Panwar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In next generation broadband wireless networks, the orthogonal frequency division multiple access (OFDMA) technique provides a flexible physical interface for mobile users (MS) to share the radio resources. Since OFDMA allows MSs in different cells to reuse the same frequency subchannels to increase network spectrum utilization, MSs at the edge of a cell suffer from severe inter-cell interference from co-channel MSs in the neighboring cells. In WiMAX and LTE networks, fractional frequency reuse (FFR) is employed to mitigate the interference for edge users, but may incur a cost in terms of a lower overall spectrum utilization. In this paper, we propose a novel frequency planning scheme to improve the signal-to-interference (SIR) ratio of edge MSs in a multi-cell OFDMA system. A cell is partitioned in a way that minimizes the interference to the edge areas while sustaining a full frequency reuse factor (FRF) for each cell. Simulation results show that our scheme substantially outperforms FFR methods in terms of SIR under the condition of full frequency reuse and high traffic load.

Original languageEnglish (US)
Title of host publication2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
Pages998-1003
Number of pages6
DOIs
StatePublished - 2011
Event2011 IEEE Wireless Communications and Networking Conference, WCNC 2011 - Cancun, Mexico
Duration: Mar 28 2011Mar 31 2011

Publication series

Name2011 IEEE Wireless Communications and Networking Conference, WCNC 2011

Other

Other2011 IEEE Wireless Communications and Networking Conference, WCNC 2011
CountryMexico
CityCancun
Period3/28/113/31/11

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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