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In this paper, we proposed a closed form solution for blind orthogonal frequency division multiplexing (OFDM) carrier frequency offset (CFO) estimation employing the rank- revealing QR triangular factorization method (RRQR). The advantage of using the RRQR it gives precious information about numerical rank and efficiently separates the signal space from the noise space. Furthermore, the RRQR does...
In this paper, the algorithm of digital image watermarking is proposed using discrete wavelet transform (DWT) for copyright protection. The detail coefficients of second level host image after taking DWT is used as a watermark key for the watermark logo insertion or addition and extraction process. We have proposed the learning of low dimensional representation in the context of image recognition...
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