A direct sequence - code division multiple access/differential phase-shift keying (DS-CDMA/DPSK) modem design
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Authors
Kara, Önder
Subjects
Spread Spectrum Modem
Direct Sequence
Code Division Multiple Access
Gold Sequences
Direct Sequence
Code Division Multiple Access
Gold Sequences
Advisors
Ha, Tri T.
Robertson, R. Clark
Date of Issue
1997-03
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
eng
Abstract
The development of a differential phase-shift keying (DPSK), direct sequence, spread spectrum modem is conducted for the purpose of creating a prototype design to be implemented in a multi-user environment. In this design, a maximal length sequence of 31 chips is used to spread the information data. The multi-user performance analysis is performed by using Bit Error Rate (BER) test equipment (1645 Hewlett Packard data error analyzer). A multi-user interference cancellation circuit for two users is introduced, and measurements are performed to show its effectiveness. The design itself encompasses the selection of components and demonstrates that the preliminary operational characteristics of a spread spectrum DPSK modem scheme for CDMA application can be achieved
Type
Thesis
Description
Series/Report No
Department
Electrical Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.