application of quantum-dot is a promising technology for implementing digital systems at nano-scale.  quantum-dot cellular automata (qca) is a system with low power consumption and a potentially high density and regularity. also, qca supports the new devices with nanotechnology architecture. this technique works based on electron interactions inside quantum-dots leading to emergence of quantum ...

The selection of an optimal regular-shaped pattern set for very low bit-rate video coding, focusing on moving regions has been the objective of much recent research in order to try and improve bit-rate eficieciency. Selecting the optimal pattern set however, is an NP hard problem. This paper presents a Generic Variable Pattern Selection (GYPS) algorithm. which introduces a pattern selection par...

Error performance is one of the main performance measures and derivation of its closed-form expression has proved to be quite involved for certain systems. In this letter, a unified closed-form December 17, 2010 DRAFT 2 expression, applicable to different binary modulation schemes, for the bit error rate of dual-branch selection diversity based systems undergoing independent but not necessarily...

This study uses the joint receive antenna selection and symbol detection (JRAS/SD) technique to simultaneously improve the bit error rate and channel capacity while reducing the cost of the radio-frequency chains in multipleinput multiple-output (MIMO) systems. Optimal antenna selection methods in the literatureare based on the criteria of maximal capacity or minimal bit error rate. Either of t...

Horizontal directional drilling is usually used in drilling engineering. In a variety of conditions, it is necessary to predict the torque required for performing the drilling operation. Nevertheless, there is presently not a convenient method available to accomplish this task. In order to overcome this difficulty, the current work aims at predicting the required rotational torque (RT) to opera...

Selection of motion vector (MV) has a significant impact on the quality of an encoded, and particularly a transcoded video, in terms of rate-distortion (R-D) performance. The conventional motion estimation process, in most existing video encoders, ignores the rate of residuals by utilizing rate and distortion of motion compensation step. This approach implies that the selected MV depends on the...

of Thesis Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Master of Science DICTIONARY-BASED CODE COMPRESSION TECHNIQUES USING BIT-MASKS FOR EMBEDDED SYSTEMS By Seok-Won Seong May 2006 Chair: Prabhat Mishra Major Department: Computer and Information Science and Engineering Memory is one of the most restricted resource in...

In this paper, we analyze the best relay selection scheme for the soft-decision-and-forward (SDF) cooperative networks with multiple relays. The term ‘best relay selection’ implies that the relay having the largest end-to-end signal-to-noise ratio is selected to transmit in the second phase transmission. The approximate performances in terms of pairwise error probability (PEP) and bit error rat...

Cooperative communication systems, which make use of the intermediate relays between transmitter and receiver, have been employed as an effective technique to combat channel fading enhance system performance. systems some drawbacks such high latency may diversity order not guaranteed. To alleviate negative effects these factors, relay selection protocol is in cooperative increase overall Relay ...