Area spectral efficiency of a channel adaptive cellular mobile radio system in a correlated shadowed environment

Abstract

In this paper, the average Area Spectral Efficiency (ASE) in bits/Sec/Hz/Km2 of a variable transmission rate, high capacity cellular communication system is studied in a correlated shadowed environment. The effect on average ASE of the normalised reuse distance, shadowing variance, correlation between radio signals, coverage radius and cell sectorization is investigated by computer simulations. It is shown mathematically that the average ASE of an interference limited mobile radio channel increases with the increased shadowing variance. Downlink simulation results indicate that, the increase in shadowing correlation between the desired and the sum of the undesired signals reduces the average ASE whereas mutual correlation between individual interfering signals increases the average ASE. The variation of cell size on average ASE is also investigated. The results suggest small cell sizes in heavily shadowed areas are well suited for highspeed variable data rate transmissions.

4 Port Mobile Phone MIMO Antenna for the Femtocell Communications

“…However, the interaction between base stations and the occurrence of shadow radio zones decreases the quality of the connectivity. This problem causes a decrease in the signal to noise ratio (SNR) of the receiver system, reducing the data speed [7]. Many studies have been conducted to solve this problem, and one of the technologies that had been studied the most involves using femtocell communications.…”

Distance-based design and evaluation of heterogeneous cellular networks

“…3,49], [44], [57] and [58] use the hexagonal grid to model traditional macrocell networks. In [59]- [62], the authors simplify this model further by assuming each cell to be circular with a designated radius. Each body of work presents the coverage of orthogonal cellular systemswhich in some cases refer to traditional TDMA/FDMA systems -in terms of the probability that the SIR at a user's mobile terminal is above a designated SIR threshold.…”