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Impact of amplifier constraints on modem design for broadband wireless links

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3 Author(s)

Broadband wireless access (BWA) must make sound business sense to be a successful `last-mile' solution technology, for it faces stiff cost competition from phone-line and cable broadband-access alternatives. The challenge to modem designers is to develop technology which improves the BWA return-on-investment (ROI), to wit: minimize the installed equipment (total system, not just modem) cost while maximizing the data-bearing capacity of millimeter-wave links. BWA links exhibit pathologies and cost models distinct from those of wired links, and these distinctions should be reflected in a well-designed BWA modem. This tutorial paper discusses BWA ROI within the context of a system-level cost concept relates this model to primary LMDS link pathologies, and suggests several modem-level features which will be required to address BWA ROI challenges. A few specific modem design approaches are noted to demonstrate that these BWA design challenges are readily addressable

Published in:

Radio and Wireless Conference, 1999. RAWCON 99. 1999 IEEE

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