Scholarly
    Communications Project


Document Type:Master's Thesis
Name:Scott L. McCulley
Email address:mcculles@grayson.com
URN:1997/00355
Title:Design and Implementation of a Practical FLEX Paging Decoder
Degree:Master of Science
Department:Electrical Engineering
Committee Chair: Theodore S. Rappaport
Chair's email:N9NB@vtvm1.cc.vt.edu
Committee Members:Dr. Jeffrey Reed
Dr. Brian D. Woerner
Keywords:Bit-Error-Rate (BER) Measurements, Bose-Chaudhuri-Hocquenhem (BCH), FLEX, Paging Decoder, Frequency Shift Keying (FSK)
Date of defense:October 24, 1997
Availability:Release the entire work immediately worldwide.

Abstract:

The Motorola Inc. paging protocol FLEX is discussed. The design and construction of a FLEX paging protocol decoder is discussed in detail. It proposes a decoding solution that includes a radio frequency (RF) receiver and a decoder board. The RF receiver will be briefly discussed. The decoder design is the main focus of this thesis as it transforms the RF frequency modulated (FM) data from the receiver and converts it to FLEX data words. The decoder is designed to handle bit sampling, bit clock synchronization, FLEX packet detection, and FLEX data word collection. The FLEX data words are then sent by the decoder to an external computer through a serial link for bit processing and storage. A FLEX transmitter will send randomly generated data so that a bit error rate (BER) calculation can be made at a PC. Each receiver'9s noise power and noise bandwidth will be measured so that noise spectral density may be calculated. A complete measurement set-up will be shown on how these noise measurements are made. The BER at a known power level is recorded. This enables Eb/No curves to be generated so that results of the decoding algorithm may be compared. This is performed on two different receivers.

List of Attached Files

THESIS.PDF jvodiss2.pdf


The author grants to Virginia Tech or its agents the right to archive and display their thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. The author retains all proprietary rights, such as patent rights. The author also retains the right to use in future works (such as articles or books) all or part of this thesis or dissertation.