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Course Description

In the first part, the characteristics of spread-spectrum systems (S3) are overviewed in view of the tradeoff between signal bandwidth and benefits that result from wideband signaling. The basic S3 techniques such as direct-sequence (DS), frequency-hopping (FH), time-hopping (TH), and hybrid of above, are introduced and compared in details. A performance consideration is given for the DS case to illustrate the processing gain with respect to narrowband signaling in the presence of interference and jamming. In the second part, it covers all aspects of spread-spectrum transmission over a physical multiple-access channel: signal generation, synchronization, modulation, and error-correcting coding of spread spectrum multiple access, known as CDMA (Code Division Multiple Access), signals. It relates these physical layer functions to link and network layer properties involving cellular coverage, Erlang capacity, and network control.

Prerequisites

ENSC 802 or equivalent.