into windowed. overlapping time segments or 'frames', For each frame (zero-padded by a factor of two or more) we compute the complex spectrum and the log-magnitude spectrum. from which all spectral peaks are identified, The model assumes that each spectral

We consider the class of linear precoded (LP) orthogonal frequency division multiplexing (OFDM) systems. We first show that single-carrier zero-padded transmissions, termed ZP-only, can be viewed as a special case of LP-OFDM. By resorting to the pair-wise error probability analysis, we establish

prefix or zero-padding. Using the EXIT chart, we illustrate the performance differences of various mappings and design a low-complexity inner coding scheme based on differential encoding with code doping. It is shown that this scheme removes the error floor without altering the code rate and while adding

). Such zero-padded OFDM transmissions enable FIR channel-irrespective symbol recovery which results in significant BER gains. The price paid is increased receiver complexity compared to the classical CP-OFDM. To reduce complexity, this paper proposes two novel equalizers for TZ-OFDM. One is based

Abstract—When the channel delay spread is larger than the guard interval of zero-padded (ZP) OFDM transmissions, interblock interference (IBI) might lead to significant performance degradation. Without altering the signal design, a time-domain equalizer (TEQ) can be applied at the receiver

Abstract not found

by using different methods. The Proposed method is compared with existing methods like Bicubic interpolation method, Wavelet zero padding method with respect to PSNR and it has shown that the proposed technique method gives better performance than the existing methods. Index Terms- Bicubic interpolation

This paper aims to present a review of recent as well as classic image registration methods. Image registration is the process of overlaying images (two or more) of the same scene taken at different times, from different viewpoints, and/or by different sensors. The registration geometrically align

that solves the optimization problem in polynomial time for a large class of problems. The proposed method has important applications in areas such as computational biology, natural language processing, information retrieval/extraction, and optical character recognition. Experiments from various domains

compression standard for continuous-tone still images, both grayscale and color. JPEG’s proposed standard aims to be generic, to support a wide variety of applications for continuous-tone images. To meet the differing needs of many applications, the JPEG standard includes two basic compression methods, each