A system architecture to maximize broadband fixed wireless capacity

Abstract

This paper explores system architecture considerations in a broadband fixed wireless application. This paper further explores solutions that optimize the spectral efficiency of a deployment and maximize the bandwidth available to a subscriber. The system solution presented here uses FDD channelization and a TDMA protocol in the MMDS band and is applicable in the 3.5 GHz range, also. Two variants are presented, a single Supercell and a cellular type Multicell. The Supercell has been effectively deployed worldwide in point to multipoint fashion. This paper reviews deployment considerations, radiation patterns and the characteristics of the two different cell structures. Performance characteristics of these cells are included: range, availability, BER, reuse and spectral efficiency. Antenna performance is evaluated for cellular type application with a focus on interference.