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General aspects of digital technologies for wireless local loops
Author(s) -
Barbounakis Ioannis S.,
Stavroulakis Peter,
Gardiner John
Publication year - 2000
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/1099-1131(200005)13:3<187::aid-dac426>3.0.co;2-c
Subject(s) - computer science , telecommunications , wireless , fixed wireless , computer network , cordless , local loop , wireless network , base transceiver station , flexibility (engineering) , wireline , wi fi array , digital subscriber line , mathematics , statistics
Wireless local loop (WLL) denotes an access system that uses a wireless link to connect a subscriber's terminal station to the line terminating equipment (local exchange or distribution node) in place of conventional copper cable. Many technical advances in transceiver component design have managed to cut down the overall cost and increase the efficiency of wireless systems making them competitive for the local loop. The technical requirements of a WLL system vary according to the market segment, geographical area and services available or scheduled by the wireline counterpart. Hence, WLL is not described exclusively by a single technology but many technologies have been utilized as wireless local loop systems. These are cellular, cordless, satellite broadcasting or terrestrial microwave distribution technologies that were conceptualized for different market needs. The competition is going to be in service quality, data rate per channel and supplementary services such as videoconference, teleshopping, teleworking, Internet access, etc. However, given the availability of radio frequency spectrum, the declining cost, the speed of installation and the flexibility of technology, wireless local loop tends to become the prevalent solution in telephone network access provision. In this paper, we review the requirements of WLL systems and the technological innovations applicable to wireless transceivers. We also cover various multiple‐access systems already implemented in other applications as candidates to offer WLL services. Copyright © 2000 John Wiley & Sons, Ltd.