Abstract
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 language | English |
|---|---|
| Article number | 6574910 |
| Pages (from-to) | 575-578 |
| Number of pages | 4 |
| Journal | IEEE Wireless Communications Letters |
| Volume | 2 |
| Issue number | 5 |
| Early online date | 5 Aug 2013 |
| DOIs | |
| Publication status | Published - Oct 2013 |
Bibliographical note
© 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Funding: EPSRC 9EP/1010157/1); National Natural Science Foundation of China (NSFC) (61103177); and Taiwan National Science Council (NSC99-2221-E-006-016-MY3).
Keywords
- cellular network
- frequency reuse scheme
- OFDMA
- performance modeling
- uplink interference