The Development of a LAN for DVB-T Transmission and DVB-S Reception with Designed QAM Modulators and COFDM in the Island Mauritius

摘要

This paper is a thorough study of a digital broadcasting system adapted tothe small mountainous island of Mauritius. A digital LAN was designed withMPEG-2 signals. The compressed signals were transmitted using DVB-T and QAMmodulators. QAM-16 and QAM-64 modulators were designed and tested with asimulator under critical conditions of AWGN and phase noises. Results obtainedfrom simulation have shown that Digital video broadcast with a single frequencynetwork (SFN) is possible in Mauritius with QAM-64 and QAM-16 modulatorsapplying COFDM mode of transmission. However, this study has also shown thatQAM-16 modulator had a better performance at low AWGN values (less than 12 dB)and can be adopted for Mauritius Island, provided that the number oftransmitted channels is not high enough.