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Orthogonal frequency division multiplexing (OFDM) is an attractive current technology to achieve high data rate in wireless communication systems. One of the main drawback associated with the OFDM is high peak to average power ratio (PAPR). It adversely affects the cost and complexity of high power amplifier (HPA), and other devices such as ADC and DAC in the OFDM system. Selective mapping (SLM) is...
Design models help the system development to analyze and visualize its working scenario as a blueprint or a prototype. A successful or error free design leads to an efficient implementation. Thus ensuring the design correctness is a crucial factor in a complex system development like communication protocols. They are reactive in nature and the general verification like correctness evaluation will...
A video summarization technique is proposed in this work using minimal spanning tree (MST) of data points. The data points correspond to image frames of a shot in the video which is to be summarized. Correlation is chosen as a similarity metric for computing the edge weights of the MST. The representative frames for each shot are chosen by computing the density of each data point. A novel method for...
Many of the Internet applications such as video conferencing, military image databases, personal online photograph albums and cable television require a fast and efficient way of encrypting images for storage and transmission. In this paper, discrete logarithms are used for generation of random keys and Number Theoretic Transform (NTT) is used as a transformation technique prior to encryption. The...
This paper presents a probabilistic analysis of radial distribution systems considering correlated nodal load demands and correlated wind power sources. The loads and wind power sources are modeled as probability distribution functions. Cholesky factorization method is used to generate correlated nodal power samples and correlated wind power injection samples. Monte Carlo Simulation (MCS) is used...
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