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In order to develop content based image retrieval (CBIR) systems, a robust reference standard of similarity between pairs of images is required, but challenging to create given the large number of pair-wise comparisons. We demonstrated a novel method of creating one for liver tumors seen in 19 portal venous CT scans by computing image similarity from subjective ratings of attributes on single images...
This paper shows that orthogonal coding and iterative decoding improve coding gain. The encoder maps a block of data into a block of bi-orthogonal codes. The decoder is a correlation receiver, which performs iterative decoding to reduce the error and enhance the coding gain. To illustrate this concept, BER performance analysis of rate frac12 orthogonal coding and iterative decoding is presented.
This paper presents a traffic engineering solution for multi-rate data transmission over 3G-4G networks. It is shown that the RF coverage footprint shrinks due to high-speed data, which can be compensated by introducing delays. The queuing theory is used to quantify the delay, where the incoming data forms a queue in a buffer and waits for radio transmission. This delay, which is a function of the...
When data is stored, compressed, or communicated through a media such as cable or air, sources of noise and other parameters such as EMI, crosstalk, and distance can considerably affect the reliability of these data. Error detection and correction techniques are therefore required. Orthogonal Code is one of the codes that can detect errors and correct corrupted data. An n-bit orthogonal code has n/2...
A method of bandwidth efficient coded modulation and its implementation on FPGA is presented. The proposed coding technique parses the input data into two blocks corresponding to ODD parity block and EVEN parity block, calculates and appends the vertical parity from the columns, and transmits the coded blocks across the channel. Horizontal parity bits from the rows are not calculated since they are...
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