Relationships for three-dimensional modeling of co-channel reuse

Abstract

Ubiquitous use of low-power had-held rdiotekphone unita will introdwe a third dimension i b c h a n e l assignment architecture. This paper reviews co-chvncl reuse r u k r i two dimensions and extends these b three dimensions. Ruks for genemting N (number of channel sets) and D / R (wbich d e c t a median Signal-to-Interference ratio) are developed for several three-dimensional geometries. It h shown that, in 3 dimensions, a mucb larger N will be needed. However, other factors which m w mitigate this are discussed.

Wireless intraoffice networks

“…For example, in a tall building, frequency assignment should be done in three dimensions [42], and frequency can be reused every few floors. But in campus-like areas with several buildings close together, the two-dimensional frequency assignments could take place by assigning a group of frequencies to each building and reusing frequencies for those buildings that are sufficiently far from one another.…”

A new soft handoff scheme using signal prediction priority queuing for the CDMA dynamic simulcast system

“…Hexagonal cell has been traditionally adopted for 2dimensional cellular system design [7]. Porter [8] proposed the Face-Centered-Cubic (close packed) cochannel reuse lattice in the 3-dimensional case. Hasheml & Khalaj [9] presented the cubic cell structure, while Lu and Cha [lo] have also proposed the Body-Centered-Cubic (BCC) cellular structure.…”