Single frequency network

Ebook "An introduction to Passive Radar" explains how passive radar works, how it differs from the active type, and demonstrates the benefits and drawbacks of this novel technology. Properties of illuminators, including ambiguity functions, digital vs. analog, digitally-coded waveforms, vertical-plane coverage, and satellite-borne and radar illuminators are explored. Readers find practical guidance on direct signal suppression, passive radar performance prediction, and detection and tracking.

110p tieulangtran 28-09-2023 4 0   Download

The final coverage and associated performance of an SFN is a joint result of the properties of all transmitters in the SFN. Due to the large number of parameters involved in the process, finding the right configuration is quite complex. The purpose of the paper is to find optimal SFN network configurations for DVB-T2. Offering more options of system parameters than its predecessor DVB-T, DVB-T2 allows large SFN networks. However, self-interference in SFNs gives rise to restrictions on the maximum inter-transmitter distance and the network size.

12p son248 24-03-2020 24 1   Download

Since Global Navigation Satellite Systems (GNSS) show degraded performance in dense urban and indoor areas, a positioning sensor based on Digital Video Broadcast-Terrestrial (DVB-T) systems is presented in this paper. DVB-T signals can be considered as signals-of-opportunity for positioning, due to their good properties. One of the challenges to overcome is to distinguish the signals from different emitters. Here, we suppose that the user can first compute his position by GNSS during an initialization phase, which is used for solving all the ambiguities concerning DVB-T emitters.

28p son248 24-03-2020 25 1   Download

The role of the television has huge impact on the 21st century and basically the televisions either make use of SFN single frequency networks (SFN) or multi frequency networks (MFN) and both these networks are ideal for meeting the practical requirements either in local and global services. Another important drawback in these two networks are these two networks consumes huge amount of spectrum.

8p son248 24-03-2020 30 1   Download

This paper reviews the main technical solutions adopted by the next-generation mobile broadcasting standard DVB-NGH, the handheld evolution of the second-generation digital terrestrial TV standard DVB-T2.

12p son248 24-03-2020 20 1   Download

This paper analyzes potential DVB-T2 transmission modes to optimize existing DTT network designs of Colombia, originally made for DVB-T, analyzing the trade-offs between capacity, coverage level and Single Frequency Network (SFN) size. Network planning results has been performed with a professional DTT network planning tool based on the three first deployment phases of the DTT network of the public national TV broadcaster RTVC. Results obtained fully justify the decision of adopting DVB-T2. Compared with the initial DVB-T design, DVB-T2 can increase the national covered population up to 7.

8p son248 24-03-2020 17 1   Download

Network-on-Chip (NoC) paradigm allows designers to integrate efficiently more intellectual properties (IPs) into a single chip system. However, the power consumption has become one of the most critical issues for designing such large complex systems. Low power design can be achieved by scaling the voltage and frequency of the target components.

10p vixyliton2711 17-04-2019 29 0   Download

Basic Conceptsin WDM optical network design Optical fibers interconnect nodes in the network WDM multiple signals carried over the same fiber at different frequencies (wavelengths) λ1 λ2 λ3 optical fiber.Basic Concepts in WDM optical network design Node Equipment Single signal

25p beobobeo 01-08-2012 66 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface

16p sting07 17-02-2012 53 2   Download

page 3 Review of Stochastic Processes and Random Variables. Review of Discrete-Time Signal Processing. Components of a Digital Communication System. OFDM WLAN Overview. Single Carrier Versus OFDM Comparison. Chap 2 - Synchronization. page 51 Timing Estimation. Frequency Synchronization. Channel Estimation. Clear Channel Assessment. Signal Quality. Chap 3 - Modulation and Coding

275p son2483 04-11-2010 99 17   Download

A radio network (RN, for short) is a distributed system with no central arbiter, consisting of n radio transceivers, henceforth referred to as stations. In a single-channel RN, the stations communicate over a unique radio frequency channel known to all the stations. A RN is said to be single-hop when all the stations are within transmission range of each other.

24p huggoo 20-08-2010 75 7   Download

The new digital radio system DAB (Digital Audio Broadcasting, nowadays often called Digital Radio) is a very innovative and universal multimedia broadcast system which will replace the existing AM and FM audio broadcast services in many parts of the world in the future. It was developed in the 1990s by the Eureka 147/DAB project. DAB is very well suited for mobile reception and provides very high robustness against multipath reception. It allows use of single frequency networks (SFNs) for high frequency efficiency....

362p dieutan 17-05-2010 230 70   Download