Analysis of uplink and downlink capacities for two-tier cellular system

1 January 1997

journal article
Published by Institution of Engineering and Technology (IET) in IEE Proceedings - Communications

Vol. 144 (6) , 405-411
https://doi.org/10.1049/ip-com:19971648

Abstract

Combining macrocell and microcell in a two-tier cellular system is highly attractive because it provides a balance between maximising the number of users per unit area and minimising the network control associated with handoff. The authors examine the system capacity of a two-tier cellular architecture employing three TDMA/CDMA strategies. Both the uplink and downlink are evaluated via mathematical analysis. Results indicate that system performance degrades for either a larger macrocell or microcell and capacities are inadequate for users near the macrocell's boundary. It also shows a huge discrepancy between the results obtained for the centre cell against those for the boundary cell.

Keywords

This publication has 9 references indexed in Scilit:

Wireless networks
Published by SPIE-Intl Soc Optical Eng ,1994
Design study for a CDMA-based third-generation mobile radio system
IEEE Journal on Selected Areas in Communications, 1994
A microcell/macrocell cellular architecture for low- and high-mobility wireless users
IEEE Journal on Selected Areas in Communications, 1993
CDMA cellular engineering issues
IEEE Transactions on Vehicular Technology, 1993
Advantages of CDMA and spread spectrum techniques over FDMA and TDMA in cellular mobile radio applications
IEEE Transactions on Vehicular Technology, 1993
On the feasibility of a CDMA overlay for personal communications networks
IEEE Journal on Selected Areas in Communications, 1992
Capacity of digital cellular TDMA systems
IEEE Transactions on Vehicular Technology, 1991
On the capacity of a cellular CDMA system
IEEE Transactions on Vehicular Technology, 1991
Overview of cellular CDMA
IEEE Transactions on Vehicular Technology, 1991