Integrated Inter-Tower Wireless Communications Network for Terrestrial Broadcasting and Multicasting Systems

Li, Wei; Zhang, Liang; Wu, Yiyan; Hong, Zhihong; Lafleche, Sebastien; Park, Sung Ik; Kown, Sunhyoung; Ahn, Sungjun; Hur, Namho; Iradier, Eneko; Bilbao, I.; Montalbán, Jon; Angueira, Pablo

doi:10.1109/tbc.2021.3081861

Cited by 35 publications

(8 citation statements)

References 19 publications

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“…Infrastructure networks such as power grids 1 – 3 , communication networks 4 , 5 , and transportation networks 6 , 7 are usually not isolated but interdependent and coupled, forming a network of networks 8 – 11 . As a consequence of the dependency, random failures can easily propagate in the network, resulting in cascading effects and serious consequences.…”

Section: Introductionmentioning

confidence: 99%

An influential node identification method considering multi-attribute decision fusion and dependency

Chen

Tan

Meng

et al. 2022

Sci Rep

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It is essential to study the robustness and centrality of interdependent networks for building reliable interdependent systems. Here, we consider a nonlinear load-capacity cascading failure model on interdependent networks, where the initial load distribution is not random, as usually assumed, but determined by the influence of each node in the interdependent network. The node influence is measured by an automated entropy-weighted multi-attribute algorithm that takes into account both different centrality measures of nodes and the interdependence of node pairs, then averaging for not only the node itself but also its nearest neighbors and next-nearest neighbors. The resilience of interdependent networks under such a more practical and accurate setting is thoroughly investigated for various network parameters, as well as how nodes from different layers are coupled and the corresponding coupling strength. The results thereby can help better monitoring interdependent systems.

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Section: Introductionmentioning

confidence: 99%

An influential node identification method considering multi-attribute decision fusion and dependency

Chen

Tan

Meng

et al. 2022

Sci Rep

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“…The Advanced Television Systems Committee (ATSC) 3.0 1 has been foreseen to expand the territory and role of broadcasting, primarily over the media & entertainment sector [1][2][3]. Seeing the potential impact of ATSC 3.0 as promising, South Korea proactively adopted this new digital terrestrial television (DTT) standard in 2017 for regular services, and the United States (US) also launched commercial ATSC 3.0 services in 2020 [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Implementation and test results of on‐channel repeater for ATSC 3.0 systems

Ahn

Kwon

et al. 2022

ETRI Journal

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Despite the successful launch of Advanced Television Systems Committee (ATSC) 3.0 broadcasting worldwide, broadcasters are facing obstacles in constructing void-less large-scale single-frequency networks (SFNs). The bottleneck is the absence of decent on-channel repeater (OCR) solutions necessary for SFNs. In the real world, OCRs suffer from the maleficent feedback interference (FI) problem, which overwhelms the desired input signal. Moreover, the undesired multipaths between studio-linked transmitters and the OCR deteriorate the forward signals' quality as well. These problems crucially restrict the feasibility of conventional OCR systems, arousing the strong need for cost-worthy advanced OCR solutions. This paper presents an ATSC 3.0-specific solution of advanced OCR that solves the FI problem and refines the input signal. To this end, the FI canceler and channel equalizer functionalities are carefully implemented into the OCR system. The presented OCR system is designed to be fully compliant with the ATSC 3.0 specifications and performs a fast and efficient signal processing by exploiting the specific frame structure. The real product of ATSC 3.0 OCR is fabricated as well, and its feasibility is verified via field and laboratory experiments. The implemented solution is installed at a commercial on-air site and shown to provide substantial coverage gain in practice. K E Y W O R D S ATSC 3.0, on-channel repeater (OCR), single-frequency network (SFN)

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“…Among the different Technical Groups (TGs) working concurrently in ATSC, Tower Network Implementation Team-5 (IT-5) should be remarked. IT-5 is working on designing, implementing, and testing an Inter-Tower Communications Network (ITCN) and In-band Distribution Link (IDL) cases within an ATSC ecosystem [21], [22]. IDL is a one-way wireless distribution system of the content to be transported to the broadcast tower that replaces the Studio to Transmitter Link (STL) using microwave or fiber links [21].…”

mentioning

confidence: 99%

“…IDL is particularly designed for content distribution to SFN towers that re-uses the broadcast spectrum and reduces the broadcaster SFN implementation and operating costs. ITCN aims to interconnect all broadcast towers to create a communication network for control, monitoring, data communication, localized datacast and broadcast services [22]. These technologies are built on the in-band full-duplex (IBFD) concept, where transmission and reception coincide within the same Radio Frequency (RF) channel.…”

mentioning

confidence: 99%

“…the significant improvement in efficiency [24]. Doubtlessly, this new paradigm in wireless communications opens the door to novel applications that could be satisfied with traditional DTT infrastructures, such as continuous system monitoring, connected cars, IoT, or cloud production systems [22]. However, although IBFD communications have already been studied for other technologies (e.g., Wi-Fi, cellular networks), the implementation of ITCN presents some specific research challenges that must be previously solved: C1) Interference management: Due to the IBFD nature of ITCN, part of the transmitted signal power is coupled to the receiving antenna, generating a self-interfering signal (i.e., loopback signal).…”

mentioning

confidence: 99%

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