Author: Sia, Chun-chung
Title: Spread spectrum communication on power line
Degree: M.Sc.
Year: 1998
Subject: Code division multiple access
Spread spectrum communications
Data transmission systems
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Department of Electronic Engineering
Pages: 77 leaves : ill. ; 30 cm
Language: English
Abstract: This project discusses the performance of data transmission in low-voltage power line channel by CDMA. The modulation technique used is OFDM-CDMA instead of the conventional technique DS-CDMA. The OFDM-CDMA system consists of three parts. They are transmitter, channel and receiver. The whole simulation is based on multi-user environment. The components of transmitter include a random data generator, Orthogonal-Walsh code generator, analogue adder, serial-to-parallel converter, multi-carrier generator, mixer and coupler. The channel is comprised of 220V generator, Gaussian white noise generator, color noise generator, multi-frequency attenuator and multi-path generator. Receiver part consists of de-coupler, band pass filter array, match-filter, parallel-to-serial converter, maximum-likelihood detector (MLD) and bit error rate calculator.
Rights: All rights reserved
Access: restricted access

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