In a fast fading channel, the orthogonality of the two consecutive Space Time Block Codes (STBC)-Orthogonal Frequency Division Multiplexing ( OFDM) symbols will be destroyed and the received signals cannot be perfectly separated. TR(Tone Reservation) is a technique designed to combat this problem by reserving a number of carries(tone) in the frequency domain to generate a cancellation signal in...

In H.264, block-based discrete cosine transform (DCT) and blockbased motion compensated prediction are used to reduce both spatial and temporal redundancies. Due to the block-based coding, discontinuities at block boundaries, referred to blocking artifacts are created. To reduce these blocking artifacts, H.264 employs a deblocking filter. However, it causes a significant amount of complexity; t...

The discrete wavelet transform (DWT) has several advantages of multiresolution analysis and subband decomposition, which has been successfully used in image processing. However, the shift-variant property is intrinsic due to the decimation process of the wavelet transform, and it makes the wavelet-domain motion estimation and compensation inefficient. To overcome the shift-variant property, a l...

The harmonic block Arnoldi method can be used to find interior eigenpairs of large matrices. Given a target point or shift to which the needed interior eigenvalues are close, the desired interior eigenpairs are the eigenvalues nearest and the associated eigenvectors. However, it has been shown that the harmonic Ritz vectors may converge erratically and even may fail to do so. To do a better job...

The phase-only logarithmic radial harmonic (LRH) filter has been shown to be suitable for scale-invariant block object recognition. However, an important set of objects is the collection of contour functions that results from a digital edge extraction of the original block objects. These contour functions have a constant width that is independent of the scale of the original object. Therefore, ...

{ An asymptotical analysis and comparison of two coded modulation systems using phase shift keying (PSK) signaling with the transmission taking place over the additive white Gaussian noise (AWGN) channel is provided. In the rst part of the paper, bounds for the decoding error probability of conventional coded modulation are derived. Both block and trellis coding are considered. The state-comple...

The shift-variant property of the discrete wavelet transform (DWT) makes the motion estimation and compensation ine$cient in the wavelet domain. In order to overcome the shift-variant property of the DWT, a low-band-shift (LBS) method has been developed. Using the LBS method in the wavelet domain, two motion estimation and compensation schemes are developed and evaluated. One scheme is the moti...

Inter prediction is a crucial part of hybrid video coding frameworks, and it used to eliminate redundancy in adjacent frames improve performance. During inter prediction, motion estimation find the reference block that most similar current block, following compensation shift fractionally obtain block. The closer original higher efficiency is. To quality blocks, enhancement network (RBENN) dedic...

Background & Aims: Shift work is programmed in various schedules, each has its own advantages and disadvantages. The main purposes of this study were: a) to determine common shift schedules used in petrochemical industries, b) to compare shift work health-related problems among employees working in different shift schedules and c) to recommend appropriate shift schedule. Methods: This cross...