The analysis of OFDM constellations for Digital Terrestrial Television

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 ...

Evaluation of single carrier and multi-carrier modulation techniques for digital ATV terrestrial broadcasting

This report presents results of computer simulations and laboratory tests conducted at the CRC to investigate various channel coding techniques proposed for the terrestrial broadcasting of digital advanced television (ATV). The system performance of these techniques is evaluated for various impairments, such as Gaussian noise and co-channel NTSC and ATV interference. The performance of NTSC wit...

The Powerful Alamouti Code in MIMO -OFDM Improvement for the Next Generation of Terrestrial Television Broadcasting Systems

This paper proposes and analyses an efficient wireless telecommunication system with multiple antennas to the emission and reception MIMO (multiple input multiple output) with space diversity in an OFDM (Orthogonal Frequency Di vision Multiplex). The proposed system consists to add modified Alamouti encoder to the system OFDM to improve the performance of the destination by intimately collabora...

Performance Comparison of Omni-directional- and Directional-Element Adaptive Array Antenna for OFDM Mobile Reception of Digital Terrestrial Television

Using WPT as a New Method Instead of FFT for ‌Improving the Performance of OFDM Modulation

Orthogonal frequency division multiplexing (OFDM) is used in order to provide immunity against very hostile multipath channels in many modern communication systems.. The OFDM technique divides the total available frequency bandwidth into several narrow bands. In conventional OFDM, FFT algorithm is used to provide orthogonal subcarriers. Intersymbol interference (ISI) and intercarrier interferen...