CDMA transmission principles
Abstract
HSPA is built upon release 99 Wideband CDMA, which is a technology based on the concept of spread spectrum transmission. The spread spectrum technique emerged out of military research as a basis for communications that aim to flexibly multiplex multiple users and services and to provide robustness against external interference. This chapter reviews some of the basics of spread spectrum techniques and building blocks that are required for a successful communications link and develops a baseband transmitter model. Impacts of multipath radio propagation effects on spread spectrum signals are examined, together with a short overview of receiver equalization strategies.
Keywords
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