Results 221 to 230 of about 32,149 (266)

Measurement and Modeling of DTTV–SFN Propagation in Thailand

Wireless Personal Communications, 2020
Digital terrestrial television (DTTV) with a single frequency network (SFN) in Thailand is based on digital video broadcasting-terrestrial second generation (DVB-T2) standard. The signal quality of DTTV–SFN is very important. DVB-T2 is improved from traditional terrestrial television broadcasting technology in term of modulation which is coded ...
Sathaporn Promwong
exaly   +2 more sources

Optimally Interleaved Signals for SFN

IEEE Transactions on Broadcasting, 2008
This paper focuses on how designing transmit signals improves performance of single frequency networks (SFNs), employing multiple distributed transmit antennas. Considering the effect of multipath fading, pairwise error probability conditioned on shadowing is derived to show that the achievable diversity order of SFNs increases as the number of ...
Ying Shen, Youxi Tang, Ting Kong, Shihai Shao   +3 more
openaire   +1 more source

Phase Adjustment in HS-SFN for HSDPA

2012 5th International Conference on New Technologies, Mobility and Security (NTMS), 2012
Abstract-High Speed Single Frequency Network (HS-SFN) is one of the possible multi-cell transmission schemes for High-Speed Downlink Packet Access (HSDPA). This technique helps user equipments (UEs) in the softer handover area by combining signals from two neighbouring cells and also by reducing intercell interference. However, combining of two signals
Aleksandr Puchko, Mikhail Zolotukhin, Vesa P. Hytönen, Thomas Höhne, Thomas Chapman   +4 more
openaire   +2 more sources

SFN: A new lightweight block cipher

Microprocessors and Microsystems, 2018
Abstract During past few years, some lightweight block ciphers have been proposed. These lightweight block ciphers take single encryption method that either uses Substitution-Permutation (SP) network structure or Feistel network structure to encrypt.
Lang Li 0002, Botao Liu, Yimeng Zhou, Yi Zou   +3 more
openaire   +1 more source

Cooperative scheme in SFN positioning system

2012 Ubiquitous Positioning, Indoor Navigation, and Location Based Service (UPINLBS), 2012
In order to solve the problem of cooperative issue in single frequency network (SFN) positioning system, in this paper, a cooperative positioning scheme using the fundamental characteristic of SFN is proposed. Some different signal levels are described for cooperative signal selection.
Jun Yan, Lenan Wu, Feng He, Man Feng
openaire   +1 more source

SFN-scope: an innovative field analysis system for SFN DVB-T signals

International Broadcasting Convention (IBC) 2014 Conference, 2014
With the transition to digital TV and the adoption of Single Frequency Networks (SFN), the quality control of the terrestrial broadcast signal becomes much more complex, because a given geographical area is served by several transmitters simultaneously.
B. Sacco, V. Mignone
openaire   +1 more source

Mobile Testing of ATSC 3.0 MISO in SFN

2019 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB), 2019
This paper presents effect of distributed multiple input single output technique (MISO), known as transmit diversity code filter set (TDCFS), in mobile environments. Distributed MISO technique has been adopted in the ATSC 3.0 standard to reduce interference caused by multiple single frequency network (SFN) transmitters.
Bo-Mi Lim, Sunhyoung Kwon, Sungjun Ahn, Sung Ik Park, Jae-young Lee 0001, Namho Hur, Heung Mook Kim, Jeongchang Kim   +7 more
openaire   +1 more source

GA-Based Green SFN Planning for DTMB

2013 IEEE International Conference on Green Computing and Communications and IEEE Internet of Things and IEEE Cyber, Physical and Social Computing, 2013
This paper proposed an approach based on genetic algorithm (GA) to deploy green single frequency network (SFN) for digital terrestrial television multimedia broadcasting (DTMB). The network optimization goal is to achieve energy efficiency, low cost, low carbon and low exposure to radiation, which caters to the sustainable development strategy.
Caiwei Li, Xiaolin Zhang
openaire   +1 more source

Methods for downlink performance enhancement in HST SFN

2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016
With the rapid development of the high-speed-trains (HSTs), companies are paying more and more attention on HST wireless communication system. Although some schemes have been proposed to enhance the system performance, there are still many challenges, e.g. high penetration loss, large Doppler shift, low data rate and so on.
Fankui Lin, Yongyu Chang, Xizeng Dai, Qiming Li, Anjian Li   +4 more
openaire   +1 more source

Experimental characterization of a SFN digital broadcast channel

2012 IEEE Latin-America Conference on Communications, 2012
In this paper, a Single Frequency Network (SFN) broadcast propagation channel is characterized using measurements performed at a suburban region with two synchronized transmitters a mobile receiver unit. The path loss gain and improvement associated to the SFN scheme is obtained, as well as the multipath channel parameters, including the mean and r.m.s.
Maurício V. Guerra, C. V. Rodriguez Ron, Luiz da Silva Mello 0001   +2 more
openaire   +1 more source