Title :
A New Way of Computing Rate in Cellular Networks
Author :
Ganti, Radha Krishna ; Baccelli, François ; Andrews, Jeffrey G.
Author_Institution :
Dept. of ECE, Univ. of Texas at Austin, Austin, TX, USA
Abstract :
It is common practice to model the base station (BS) locations in a cellular system by a grid, such as a hexagonal or square lattice. This model is usually analytically intractable as well as quite idealized. Therefore, system designers resort to complex simulations to evaluate network performance. In this paper, we introduce a new model for the base station locations based on a homogeneous Poisson point process (PPP), whereby the mobiles communicate with their nearest base stations. We obtain the distribution of the signal-to-interference-noise ratio (SINR), compute the average ergodic rate, and analytically verify the trade-off between coverage and rate with frequency reuse. We compare our results with actual BS locations as well as the grid model. In addition to being tractable, we also observe that the performance predicted by the PPP model lower bounds the actual performance, and is about as predictive as the grid model which provides upper bounds.
Keywords :
cellular radio; grid computing; mobile computing; stochastic processes; BS location; PPP model; average ergodic rate; base station location; cellular networks; grid model; homogeneous Poisson point process; mobile communication; network performance; signal-to-interference noise ratio; square lattice; system designer; Base stations; Biological system modeling; Interference; Mobile communication; Rayleigh channels; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962727