Performance comparison of OFDM bandwidth request schemes in fixed IEEE 802.16 networks

Jianhua He, Zuoyin Tang, Hsiao Hwa Chen

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


IEEE 802.16 standard specifies two contention based bandwidth request schemes working with OFDM physical layer specification in point-to-multipoint (PMP) architecture, the mandatory one used in region-full and the optional one used in region-focused. This letter presents a unified analytical model to study the bandwidth efficiency and channel access delay performance of the two schemes. The impacts of access parameters, available bandwidth and subchannelization have been taken into account. The model is validated by simulations. The mandatory scheme is observed to perform closely to the optional one when subchannelization is active for both schemes.

Original languageEnglish
Pages (from-to)283-285
Number of pages3
JournalIEEE Communications Letters
Issue number4
Publication statusPublished - 2008

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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