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In this paper, a Wireless Local Area Network (WLAN) solution for the industrial communication system utilized in the factory automation (FA) environment is addressed. In the FA field, the communication mechanism which is intended to the short frame transmissions under real-time, safety and fair distribution between the industrial robots (iRBs) is now being investigated. We offer two proposals to achieve...
We study a new synchronization algorithm based on low-density parity check codes. The algorithm was developed for scenarios with redundant information in 2010, [1]. We describe a revised version of the algorithm and, for the first time, we discuss the fundamentals about the coding and decoding theory. The results of this analysis define the scope and restrictions of the algorithm. We show that the...
In this paper we propose two image watermarking algorithms, which are robust to cropping operation using self-synchronization mechanism. In both algorithms, the watermark sequence is firstly encoded by non-cyclic Low Density Parity Check Codes (LDPC) and then it is embedded into the block-wised Discrete Cosine Transform (DCT) coefficients using the Quantization Index Modulation (QIM) algorithm. In...
In this paper we propose an adaptive data hiding method that divides the host image in suitable and ineligible blocks. This classification is based on the DCT energy features from the horizontal, vertical and diagonal frequency information. Only the suitable blocks are used for data embedding using quantization index modulation (QIM). After the composite image is attacked by JPEG compression, a desynchronization...
A backplane transceiver in 90 nm CMOS that employs duobinary signaling over copper traces is described. To introduce duobinary signaling into data transfers on printed boards, three techniques are developed: 1) edge equalization for equalizer adaptation; 2) 2/spl times/ oversampled transmitter equalizer for ISI control; and 3) 2b-transition-ensure encoding for clock recovery.
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