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In the DVB-T2 digital terrestrial television standard a transmitter signature can be included in order to provide a unique identification to each of the transmitters in the network. This feature is optional and it can be exploited for many other applications. For instance, it is a very valuable tool for broadcasters intending to bring new a single frequency network onto air or troubleshooting a network...
ATSC 3.0 includes Layered Division Multiplexing (LDM) in addition to the traditional Time Division Multiplexing (TDM) technique in order to offer simultaneous stationary and mobile services. At the receiver side, Log-likelihood ratio (LLR) probability density functions are considered in the decoding process. The main objective of this paper is to analyze the performance of using different LLR PDF...
Layered Division Multiplexing (LDM) is a novel non-orthogonal multiplexing access (NOMA) technique, based on power allocation techniques, which has been recently included in the ATSC 3.0 Digital Television Terrestrial (DTT) standard. In the recent literature, the LDM capabilities have been studied just for the two layered case, mainly when one of the layers is targeting mobile/indoor services and...
This paper presents the performance study of the interleavers defined in the ATSC 3.0 physical layer. It must be noted that for single PLP configurations convolutional time interleaving and frequency interleaving can be used. Nevertheless, when multiple PLP configurations are used, cell interleaving, block time interleaving, frequency interleaving and subslicing can also be included. The ATSC 3.0...
Non uniform constellations have been recently included in the new terrestrial broadcasting system ATSC 3.0, providing better performance than the uniform ones. However, for high order constellations, the complexity in the demapper grows as the number of constellation points do, being necessary to reduce the number of degrees of freedom in the constellation design process. The goal of this paper is...
Layered Division Multiplexing (LDM) is as a new technical solution for multiplexing different services over the same RF channel. it has already been accepted as a baseline technology for the new generation ATSC 3.0 digital terrestrial television (DTT) standard. In the recent literature there are several comprehensive studies that analyze its performance results and main implementation issues. Nevertheless,...
Uniform quadrature amplitude modulation (QAM) has been widely used in terrestrial broadcasting systems because it provides a high data rate although it is less resilient to noise and interference. However, the uniform pattern of the constellation points doesn't provide the highest BICM capacity so a degree of non uniformity is needed so as to improve the BICM capacity of the system. On the other hand,...
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