The transport network paradigm is moving toward next-generation networks that aim at IP convergence, while architectures and technologies are diversifying. Video technologies including ultrahigh-definition TV (more than 33 M pixels) continue to advance, and future communication networks will become video-centric. The inefficiencies of current IP technologies, in particular, the energy consumption and throughput limitations of IP routers, will become pressing problems. Harnessing the full power of light will resolve these problems and spur the creation of future video-centric networks. Extension of optical layer technologies and coordination with new transport protocols will be critical; hierarchical optical path technologies and optical circuit/path switching will play key roles. Recent technical advances in these fields are presented.

Optical Networking Technologies That Will Create Future Bandwidth-Abundant Networks [Invited]

The International Telecommunication Union Radiocommunication Sector (ITU-R) published Recommendation (Rec.) BT.2020 ?Parameter Values for Ultra-High-Definition Television Systems for Production and International Programme Exchange? [1] in August 2012. The parameters for television (TV) systems are roughly equivalent to the image format, including pixel count, frame frequency, and colorimetry. These basic system parameters determine what kind of visual experiences the system can provide to the viewers in terms of possible field of view (FOV) size, quality of motion portrayal, and accuracy of color reproduction.

Ultra-High-Definition Television (Rec. ITU-R BT.2020): A Generational Leap in the Evolution of Television [Standards in a Nutshell]

The analysis, processing, and parameters estimation of signals whose spectral content changes in time are of crucial interest in many applications, including radar, acoustics, biomedicine, communications, multimedia, seismic, and the car industry [1]? [11] Various signal representations have been introduced to deal with this kind of signals within the area known as time-frequency (TF) signal analysis The oldest analysis tool in this area is the short-time Fourier transform (STFT), as a direct extension of the classical Fourier analysis The other key tool is the Wigner distribution (WD), introduced in signal analysis from quantum mechanics The aim of this lecture note is to present and relate these two of the most important tools in the TF signal analysis, the STFT and the WD (introduced by two Nobel prize winners, D Gabor and E Wigner, respectively) This relation is a basis for the S-method (SM), an efficient and simple TF signal analysis tool providing a gradual transition between these two representations

From the STFT to the Wigner Distribution [Lecture Notes]

Ultrahigh-definition television (UHDTV) is now being studied as the most promising candidate for next-generation television beyond HDTV. It consists of extremely high-resolution imagery and multichannel 3-D sound to give viewers a stronger sensation of reality. Various aspects should be taken into account when determining UHDTV image format. Of those, it is believed that user visual experience is some of the most important aspects to be considered. This paper describes the studies conducted on the relationship between image format and visual experience of UHDTV.

UHDTV Image Format for Better Visual Experience

We propose a novel network architecture that exploits coarse granular routing while add/drop operations are done at wavelength granularity. For the proposal, we introduce a node architecture and a network design algorithm. Numerical results demonstrate that the proposed architecture's performance approaches that of single-layer optical path networks while substantially reducing hardware scale.

Itu-R

Papers

Parameter Values for an Expanded Hierarchy of LSDI Image Formats for Production and International Programme Exchange