Statistical model of OFDMA cellular networks uplink interference using lognormal distribution

Jianhua He, Zuoyin Tang, Hsiao-Hwa Chen, Wenqing Cheng

Research output: Contribution to journalArticlepeer-review


In this letter, we propose an analytical approach to model uplink intercell interference (ICI) in hexagonal grid based orthogonal frequency division multiple access (OFMDA) cellular networks. The key idea is that the uplink ICI from individual cells is approximated with a lognormal distribution with statistical parameters being determined analytically. Accordingly, the aggregated uplink ICI is approximated with another lognormal distribution and its statistical parameters can be determined from those of individual cells using Fenton-Wilkson method. Analytic expressions of uplink ICI are derived with two traditional frequency reuse schemes, namely integer frequency reuse schemes with factor 1 (IFR-1) and factor 3 (IFR-3). Uplink fractional power control and lognormal shadowing are modeled. System performances in terms of signal to interference plus noise ratio (SINR) and spectrum efficiency are also derived. The proposed model has been validated by simulations.

Original languageEnglish
Article number6574910
Pages (from-to)575-578
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number5
Early online date5 Aug 2013
Publication statusPublished - Oct 2013

Bibliographical note

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Funding: EPSRC 9EP/1010157/1); National Natural Science Foundation of China (NSFC) (61103177); and Taiwan National Science Council (NSC99-2221-E-006-016-MY3).


  • cellular network
  • frequency reuse scheme
  • performance modeling
  • uplink interference


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