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The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title: The development of an embedded wireless modem conforming to advanced mobile phone system and cellular digital packet data standards
Author: Ren, Xin
View Online: njit-etd1996-081
(x, 69 pages ~ 2.0 MB pdf)
Department: Department of Electrical and Computer Engineering
Degree: Master of Science
Program: Electrical Engineering
Document Type: Thesis
Advisory Committee: Zhou, MengChu (Committee chair)
Carpinelli, John D. (Committee member)
Shi, Yun Q. (Committee member)
Date: 1996-01
Keywords: Modems.
Mobile communication systems.
Availability: Unrestricted
Abstract:

Introduced by AT&T Bell Labs in 1970s, today Advanced Mobile Phone Systems (AMPS) - a first generation analog cellular system serve millions of customers in the United States and 55 other countries, and the number of subscribers is still rapidly increasing. Although digital cellular systems are emerging in recent years, research efforts are still being made to the enhancement of AMPS systems because of their popularity. An example is the new Cellular Digital Packet Data (CDPD) standard announced in 1994. CDPD is an overlay of the existing AMPS, and has the capability of transmitting data packets over such an analog cellular network. This thesis intends to first introduce this new technology, and then discusses the design and implementation of an embedded wireless modem which conforms to the CDPD public standard. The emphasis is on software design, implementation, simulation, and test of the modem. The real-time test and demonstration shows that the newly developed modem and related software meet the requirements and specifications in terms of functionality, modularity, robustness, and low power consumption.


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