As the next generation digital TV (DTV) standard, ATSC 3.0 system is developed to provide significant improvements on spectrum efficiency, service reliability, flexibility, and forward compatibility. One of top-priority requirements for capability deliver reliable mobile services a large variety indoor devices. Layered-division-multiplexing (LDM) physical-layer non-orthogonal-multiplexing technology efficiently multiple with different robustness throughputs in one channel. A two-layer LDM...

In this paper, we propose novel transmitter and receiver architectures for low complexity layered division multiplexing (LDM) systems. The proposed architecture, which is adopted as a baseline technology of the Advanced Television Systems Committee 3.0, shares time frequency interleavers, FFT, pilot patterns, guard interval, preamble, bootstrap among different layers, so that implementation LDM receivers can be realized with less than 10% increase compared to conventional single layer...

This paper introduces the concept of a non-uniform constellation (NUC) in contrast to conventional uniform quadrature-amplitude modulation (QAM) constellations. Such constellations provide additional shaping gain, which allows reception at lower signal-to-noise ratios. ATSC3.0 will be first major broadcasting standard, completely uses NUCs due their outstanding properties. We consider different kinds and describe performance: 2-D more gain cost higher demapping complexity, while 1-D allow...

In this paper, we introduce the overview and detailed structure of low-density parity-check (LDPC) codes, which are adopted for physical layer standard Advanced Television Systems Committee (ATSC) 3.0. As one features to mitigate channel errors efficiently, LDPC codes used as a main part forward error correction scheme within bit interleaved coded modulation chain. This paper presents two different structures in ATSC 3.0 standard: 1) irregular repeat accumulate 2) multi-edge type structure....

Cloud transmission (Cloud Txn) is a flexible multilayer system that uses spectrum overlay technology to simultaneously deliver multiple program streams with different characteristics and robustness for services (mobile TV, HDTV, UHDTV) in one radio frequency channel. Txn like layered-division multiplexing. The transmitted signal formed by superimposing number of independent signals at desired power levels form multilayered signal. layers can have coding, bit rate, robustness. upper layer...

The development of 5G system provides a unique opportunity to implement unified wireless transmission platform that can simultaneous deliver unicast, multicast and broadcast services using the same spectrum infrastructure. This be achieved by developing more capable point-to-multipoint (PTM) component, also called Multimedia Broadcast Multicast Services (5G-MBMS). A properly designed 5G-MBMS could achieve convergence terrestrial mobile broadband TV broadcasting systems.By inherently allowing...

In this brief, we propose a newly designed quarter-rate quasi-cyclic low density parity check (LDPC) code for the cloud transmission system. The system requires near Shannon limit low-rate coding next generation terrestrial digital television proposed LDPC is optimized <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">R</i> =1/4. At length of 64 K, it only 0.6 dB away from limit.

This paper proposes a class of raptor-like rate compatible low-density parity check (LDPC) codes for the cloud transmission (CTxN) system. The proposed LDPC have lengths 16,200 and 64,800 which are same as those DVB T2/S2 so that CTxn system can easily be combined with DVB-T2/S2 second layer service. As optimized at low coding range (R <;1/2), their performance is not only close to Shannon limit, but also better than codes. Moreover, raptor code's property they decoded punctured codeword...

Advanced Television Systems Committee (ATSC) 3.0, the new generation digital terrestrial television standard, has been designed for facing challenges of future broadcasting systems. ATSC 3.0 built using most recent cutting-edge technologies. Layered division multiplexing (LDM) is one major components system baseline. LDM provides a tool to make flexible use spectrum delivering simultaneous services stationary and mobile services. This paper presents performance evaluation core in scenarios...

Future 5G systems will include a point-to-multipoint (P2MP) transmission mode to achieve high capacity and spectrum efficiency for multiple use cases, such as IoT, lifeline communications, broadcast-type services. Layered-division-multiplexing (LDM) is novel non-orthogonal multiplexing technology recently adopted by the next generation digital TV broadcast system, ATSC 3.0, which capable of providing significant improvement when delivering services simultaneously. This article explores...

This paper presents the advanced television systems committee (ATSC) 3.0 physical layer system performances with different modulation and channel coding combinations. Numerous computer simulations, laboratory tests, field trials are conducted under additive white Gaussian noise, RC20, RL20 channels. Analysis of results shows that measured values in less than 1 dB away from simulation results. confirms ATSC is capable providing services ranging ultra-robust reception (negative SNR operation...

The Advanced Television Committee (ATSC) has been working on the next generation broadcast television system, known as ATSC 3.0, to replace first-generation (ATSC 1.0) A/53 standard, basic component technologies of which have in use for 20 years.

This paper describes systems, devices, and methods to implement a bi-directional integrated inter-tower wireless communications network (IITWCN). The described technology can be implemented in combination with the Broadcast Core Network (BCN) next generation broadcast eco-system and, therefore, support new business cases for operators such as delivery of flexible datacasting services or point-to-point Internet services. introduced (ITCN) extends previous unidirectional in-band distribution...

Wireless backhaul has recently gained a significant amount of interest as cost-effective solution in comparison with conventional technologies dedicated microwave links or fiber optics. Self-interference cancellation (SIC) is an enabling technology that allows wireless to operate the more spectrum-efficient in-band full-duplex (IBFD) operation mode instead out-of-band mode. Compared Wi-Fi IBFD transceivers, systems face some unique challenges, such significantly higher transmission power and...

This paper introduces an improved structure for directional filter banks (DFBs) that preserves the visual information in subband domain. The new achieves this outcome while preserving both efficient polyphase implementation and exact reconstruction property. outlines a step-by-step framework which to examine DFB, within discusses how, through insertion of post-sampling matrices, distortions can be removed. In addition tree structure, attention is given form design linear phase filters. Most...

A Single frequency network (SFN) design based on the Advanced Television Systems Committee (ATSC) terrestrial digital television (DTV) system normally causes interference among signals from multiple transmitters or repeaters in network. The ATSC recommended practice (RP) A/111 introduces transmitter identification (TxID) embedded to 8-VSB signals. TxID signal analyzer is then used detect and analyze Following analysis results, SFN can be managed by adjusting delay power of repeaters. This...

This paper presents a generic methodology to optimize constellations based on their geometrical shaping for bit-interleaved coded modulation (BICM) systems. While the method can be applicable any wireless standard design it has been tailored two delivery scenarios typical of broadcast systems: 1) robust multimedia and 2) UHDTV quality bitrate services. The process is maximizing BICM channel capacity given power constraint. major contribution this low complexity optimization algorithm optimal...

In this paper, we present laboratory and field test results of layered division multiplexing (LDM) time (TDM) technologies based on Advanced Television Systems Committee 3.0. The presented include analysis in several scenarios such as rooftop, indoor, mobile receptions. order to provide performance comparison the LDM TDM technologies, reception power (field strength) successful rate are measured for all considered scenarios. For in-depth real environment, further measurements threshold...

To meet the ever increasing demand for better service quality and availability, next generation digital TV (DTV) broadcast, a.k.a., ATSC 3.0, is developed with new capabilities to deliver 4K ultra-high-definition (4K-UHD) services fixed receivers, robust HD-quality mobile as well non-broadcast (e.g., broadband), including Internet of Things (IoT), Connected Vehicles, etc. realize these capabilities, it becomes necessary evolve existing single-transmitter high-power-high-tower (HPHT) network...

This paper presents Internet protocol (IP)-based convergence of broadcast and broadband networks using Advanced Television Systems Committee (ATSC) 3.0-the next generation terrestrial broadcasting standard. In the network, combination Layered Division Multiplexing (LDM) Scalable High Efficiency Video Codec (SHVC) is used, enabling efficient use spectrum when mobile fixed services are intended in a single radio frequency (RF) channel. The proposed case IP-based that service largely consumed...

This paper provides performance evaluations of two state-of-the-art terrestrial broadcasting systems, ATSC 3.0 and 3GPP Rel-17 5G broadcast, in terms physical layer capability, network deployment operating costs. The performances are evaluated the mobile environment, considering practical implementations handheld terminals. Extensive simulation results demonstrate that outperforms because well-designed bit interleaved coded modulation (BICM) time interleaver can mitigate deep signal fades....

We have identified a resist material that is suitable for high-speed, nanometer-scale scanning probe lithography (SPL) using the atomic force microscope (AFM). The siloxene, commonly known as spin on glass (SOG). SOG film deposited silicon sample and exposed with voltage applied between AFM tip (negative) substrate (positive). Voltages of 70 V currents 1 nA are typical. It positive where etch selectivity unexposed areas greater than 20. recorded line widths narrow 40 nm. writing speed mm/s,...

Digital On-Channel Repeater (DOCR) can be used for Single Frequency Networks (SFN's). It is much simple and low cost compared to Distributed Transmitter which needs Studio Link (STL). However, traditional DOCR has one of those defects such as a power limit, long time system processing delay or poor output signal quality. In order overcome all defects, we introduce Equalization (EDOCR) regenerates the original 8-VSB with relatively short delay. Lab. Field test results show that EDOCR...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper presents a guideline for designing an Equalization Digital On-Channel Repeater (EDOCR) and proposes efficient method to implement it. The major concerns in the design of EDOCR are shortening system delay, maintaining synchronization between main transmitter EDOCR, obtaining high signal noise ratio (SNR) output, enabling operation environment adjacent channel interference. short delay...

In ATSC 3.0, a bootstrap is used to enable service discovery and signaling reception at low signal levels. The 3.0 described in this paper. consists of several specially-coded OFDM symbols. first symbol for detection, synchronization, discovery. remaining symbols convey system parameters describing the associated physical layer frame structure, e.g., bandwidth, sampling rate. originating sequence combination Zadoff-Chu pseudo-noise frequency domain. Signaling information conveyed through use...