DESIGN AND SIMULATION OF ROBUST DIGITAL VIDEO BROADCASTING CABLE (DVBC) USING QUADRATURE PHASE SHIFT KEYING (QPSK) MODEMS TECHNOLOGY WITHIN GAUSSIAN INTERFERING CHANNEL

The main focus of this research is the design and simulation of a cable television DTTB SYSTEM THAT IS viewable in a QPSK demodulator, within a Gaussian noise interference channel. QPSK is the industry standard for encoding video signals. It's possible to find practical issues that prevent streaming. This, I would assume, is partially due to Equipment and encoding inconsistencies. For this research, QPSK has been used for encoding. This encoding will be made use as a part of the Gaussian channel for transmission and response. Adaptive equalization, but digital ones are being included to fix deficiency problems such as digital segregation and interference. Whenever data is comprehensively transmitted forth and back, the model forecasts that it would be possible to increase the transmission quality. In Particular, the model ensured a defined BER performance below 1 percent and provided reasonable throughput when SNR was in the range of 15 to 20 decibels. Broadly, the whole system can be divided into three functional blocks, which are the input and output sections (which are, in simpler terms, termed as communication channels) and the last block, which is the modulator block, and in this case, is the QPSK block. So, in a simple quest for this purpose, the system is designed in such a way as to limit the degradation of the received signal due to the presence of noise and interference in the Gaussian channel. Adaptation, or commonly known as equalization, is also the process of channel estimation, where the channel distortion is compensated for. It has improved in the simulation.