Synchronized multiplexing for digital video transmission.

An Efficient Hierarchical Modulation based Orthogonal Frequency Division Multiplexing Transmission Scheme for Digital Video Broadcasting

Due to the increase of users the efficient usage of spectrum plays an important role in digital terrestrial television networks. In digital video broadcasting, local and global content are transmitted by single frequency network and multifrequency network respectively. Multifrequency network support transmission of global content and it consumes large spectrum. Similarly local content are well ...

cient Storage for Synchronized Digital Audio and Video

Performance of Ofdm Multiplexing Transmission Using Different Digital Modulation Schemes

A detail analysis of the performance of an orthogonal frequency division multiplexing (OFDM) transmission with different digital modulation techniques such as BPSK, QPSK and QAM has been carried out. BER performance has been determined for Additive white Gaussian Noise (AWGN) channel. The simulation results for the performance of OFDM using different digital modulation schemes BPSK, QPSK and QA...

Compressed Video Transmission over Digital Networks

video distribution, increases the quality and security of video, and allows for interactivity. In the past two decades, new technologies in digital video compression have paved the way for video transmission. This is providing an environment for the widespread availability of a wide range of real video networking services. There exist various compression techniques that are in part competitive ...

Post Transmission Digital Video Enhancement for People with Visual Impairments.

Image enhancement has been shown to improve the perceived quality of images and videos for people with visual impairments. The MPEG coding scheme makes spatial filtering, likely to help those with such impairments, possible at the decoding stage. We implemented a real-time platform for testing and improving contrast enhancement algorithms for MPEG video, with controls appropriate for the target...