| 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 |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14418903.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 9.44 MB | Adobe PDF | View/Open |
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