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Title:
A SIMPLIFIED DIGITAL FIR FILTER FOR DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION SYSTEMS
Document Type and Number:
WIPO Patent Application WO2001026224
Kind Code:
A9
Abstract:
A spread spectrum modulated signal generator is disclosed that reduces the storage requirement for storing values representing filter responses of input signal samples in a digital filter by taking advantage of time-reversal symmetry of the responses. Moreover, the disclosed signal generator supports up-ramping and down-ramping for smooth transmission of spread spectrum modulated signals.

Inventors:
DENT PAUL W
BARROW DAVID
Application Number:
US0025970W
Publication Date:
January 23, 2003
Filing Date:
September 22, 2000
Export Citation:
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Assignee:
ERICSSON INC.
International Classes:
H04L27/00; H03H17/06; (IPC1-7): H03H17/06
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