Symbol Judgment in Digital AM Broadcasting System Based on Hybrid Modulation

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 ...

Digital Broadcasting Systems Intended for Am Bands

Hybrid Modulation Based on Combining of AM and UNB

To improve spectral efficiency, a Hybrid modulation format based on combining of AM and UNB is proposed in the article. And channel capacity of the Hybrid modulation is analyzed. According to FCC AM spectral emission mask and china national standards on AM transmitter, the time and frequency domain characteristics of the modulation format are analyzed, it is fund that the licensed AM users can ...

Continuous Phase Modulation for Digital Video Broadcasting

In this paper, we study the performance of the Digital Video BroadcastingTerrestrial (DVB-T) system with Continuous Phase Modulation Orthogonal Frequency Division Multiplexing (CPM-OFDM). The proposed structure combines the advantage of mitigating the Peak-to-Average Power Ratio (PAPR) problem in the Power Amplifier (PA)in addition to exploiting the channel frequency diversity and power efficie...

A Digital Audio Broadcasting System

T h e audio quality, robustness and complexity issues of a novel mobile digital audio broadcast (DAB) scheme a re addressed. T h e audio codec is based on a combination of subband coding (SBC) and mult ipulse excited linear predictive coding ( M P L P C ) , where the bi t allocation is dynamically adapted according t o both the signal power in different subbands and a perceptual hearing model. ...