|Title:||Spread spectrum communication on power line|
|Subject:||Code division multiple access|
Spread spectrum communications
Data transmission systems
Hong Kong Polytechnic University -- Dissertations
Department of Electronic Engineering
|Pages:||77 leaves : ill. ; 30 cm|
|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|
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|b14418903.pdf||For All Users (off-campus access for PolyU Staff & Students only)||9.44 MB||Adobe PDF||View/Open|
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