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Partial update (PU) methods play a critical part in least-mean square (LMS) algorithms with an aim to reducing computational complexity. This paper presented a novel variable step-size PU procedure for LMS algorithms via the performance metric, called error difference indicator. With the aid of such an indicator, the PU procedure can determine the proper step size and works efficiently with a low-cost...
To provide complete vehicle information protection mechanism, this work proposes a self-adaptive system for vehicle information security applications (SAV). Different from the conventional software-based information access method, in the SAV, the access control policies are designed by the protection matrices and implemented as reconfigurable hardware modules. The information access method becomes...
This paper presents an error-resilient wavelet-based ECG processor under voltage overscaling (VOS). A novel predictor based on weighted-average bilateral estimation (WBE) is proposed and used for algorithmic noise tolerance (ANT) that compensates the VOS-incurred errors. A two-stage ANT mechanism using heterogeneous error-detection techniques is developed, which enhances the robustness of ANT. This...
This brief proposes a class of nonlinear pseudorandom number generators (PRNGs) based on coupling linear generators (DX generators) with a nonlinear generator (digitized Logistic map). By breaking the linearity, the unpredictability of the proposed generators in the family of coupling PRNGs is enhanced while the nice properties of efficiency, long period, and excellent statistical properties are preserved...
A universal platform for aerospace craft simulation was proposed in order to satisfy the various requirements in space tasks simulation. The platform is composed of a series of modular and standardized simulators, in which the kinematic, optic, radar or other characters of crafts can be simulated. The command & control functions and task programming processes can also be simulated in either...
By using DS18B20 as temperature sensor, MOC3041 and BTA16 as executive elements, the system can control the power of electric stove to regulate water temperature through the PID algorithm. Then the temperature information of the points is transformed to the host computer system by wireless communication module. The host computer system is used to monitor and adjust the temperature and the liquid level...
As the complex characteristics of underwater acoustic communication channel, the underwater acoustic communication data rate is limited. In order to realize the underwater voice communication, the required speech data compression rate should be much higher. So we select TLV320AIC12 and AMBE-3000 to realize the design of voice codec module. The TLV320AIC12 is a high-performance A/D & D/A chip with...
Nowadays, more and more applications are computing-intensive, such as search engines, online game servers, or even fMRI, used in medical examination. Supercomputers are setup to meet the computing demand as well as huge data storage. However, some applications favor computing power much more than data storage. To emphasize on providing computing power with low cost, low power, high scalability and...
This paper proposes a self-reseeding pseudo RNG (PRNG) based on digitized logistic map to introduce small perturbations periodically so that the low-period can be removed and the randomness can be enhanced. The strategy and the optimization of selecting reseeding period with corresponding fixed pattern are demonstrated. The resultant PRNG generates random sequence fulfilling all the randomness requirements...
To lower the risk in developing a TCP/IP Off load Embedded System (TOES), one may rely on certain platform containing a single or plurality of embedded microprocessor(s). However, previous work shows that it is not easy to use such a slow-clocked microprocessor(s) to achieve high speed goal. Hence this work proposed an efficient architecture of a TOESas well as buffering processes which guarantee...
Modern network computing is in the process of changing from manual management to autonomic computing. As the core of network computing, database management system with autonomic computing must be able to participate in the process to meet the performance requirements of the network applications. This paper studies on workload adaptation technology. In the workload adaptation framework, the performance...
MixColumns/InvMixColumns dominates both the logic resource and the critical delay in advanced encryption standard (AES) hardware implementation with direct mapping S-boxes. The proposed decomposition method optimizes the area and the delay of integrated MixColumns/InvMixColumns circuit. Theoretically, the proposed short-path circuit reduces the area up to 42% with the same 5 XOR gates delay (Y.-K...
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