Statistical Model of OFDMA Cellular Networks Uplink Interference Using Lognormal Distribution

被引:15
|
作者
He, Jianhua [1 ]
Tang, Zuoyin [1 ]
Chen, Hsiao-Hwa [2 ]
Cheng, Wenqing [3 ]
机构
[1] Aston Univ, Sch Engn & Appl Sci, Birmingham B4 7ET, W Midlands, England
[2] Natl Cheng Kung Univ, Dept Engn Sci, Tainan 701, Taiwan
[3] Huazhong Univ Sci & Technol, Elect & Informat Engn Dept, Wuhan, Peoples R China
基金
中国国家自然科学基金; 英国工程与自然科学研究理事会;
关键词
Frequency reuse scheme; cellular network; performance modeling; uplink interference; OFDMA;
D O I
10.1109/WCL.2013.072613.130446
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
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.
引用
收藏
页码:575 / 578
页数:4
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