Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number UPD-00000272711 Date and Time of Latest Transaction 20090717000433.0 General Information 080210s1988 xx eng Cataloging Source DML Language Code eng Local Call Number LG 995 1988 E6 L54 Main Entry - Personal Name Lim, Rudy Alkuino Title Statement A study of direct-sequence spread spectrum/delta modulation system/ Rudy Alkuino Lim Physical Description 134, [16] leaves Summary, Etc. This study focuses on the design, construction, practical and theoretical performance evaluation of Direct-Sequence Spread Spectrum/ Delta Modulation System. The prototype model of the system is a Direct-Sequence Spread Spectrum system intended for digital communication over wire transmission channel using baseband modulation, speficifically Continously Variable Slope Delta Modulation at 16 kbps. The coding used was a maximal-length Gold Code and a test tone of 1 KHZ frequency was used as the input signal in order to determine the performance of the system. The Signal-to-Quantization Noise ratio of the CVSD (Continously Variable Slope Delta Modulator) used was determined both through mathematical calculations and test measurements. The BER of the system was determined theoretically and it is computed with pulse-noise jamming signal introduced in the transmission channel to demonstrate the advantage of spreading the bandwidth of data before transmission. The circuit design of the system was made to make use, as much as possible the available electronic components in the local markets, except for the Adaptive Delta Modulator/ Demodulator, used for general communications which had to be imported from Hongkong General Note Typescript Subject Added Entry - Topical Term Spread spectrum communications   Digital communications Collection Category FI Location UP DARCHIVES LG 995 1988 E6 L54 Room-Use Only FI-6763T   UP DENG-II LG 995 1988 E6 L54 e2000000341 Room-Use Only E2-75T Collection Category UP Location UP DARCHIVES LG 995 1988 E6 L54 Room-Use Only FI-6763T   UP DENG-II LG 995 1988 E6 L54 e2000000341 Room-Use Only E2-75T Textual Physical Form Designator Thesis           Physical Location University of the Philippines Diliman Main Library: University Archives LG 995 / 1988 E6 L54 Diliman: College of Engineering Library II LG 995 / 1988 E6 L54           Digital Copy Not Available          Add to Book Cart  |   Download MARC