Two architectures for parallel-prefix modulo 2 n - 1 adders are presented in this paper. For large wordlengths we introduce the sparse modulo 2 n - 1 adders that achieve significant reduction of the wiring complexit...
Two architectures for parallel-prefix modulo 2 n - 1 adders are presented in this paper. For large wordlengths we introduce the sparse modulo 2 n - 1 adders that achieve significant reduction of the wiring complexity without imposing any delay penalty. Then, the Ling-carry formulation of modulo 2 n - 1 addition is presented. Ling modulo adders save one logic level of implementation and provide high-speed solutions for smaller adder widths, where wiring complexity is small. The performance of the proposed adders has been validated with static CMOS implementations. In all examined cases, the proposed designs achieve significant savings in both area and delay compared to previously published architectures.
As a primary part of design verification and chip testing in the life cycle of Integrated Circuits (ICs), test generation receives increasing attention. By the application of branch coverage, bit-function coverage and...
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As a primary part of design verification and chip testing in the life cycle of Integrated Circuits (ICs), test generation receives increasing attention. By the application of branch coverage, bit-function coverage and statement-observability coverage measures, this paper introduces a high level test case generation method based on Control Flow Graph/Data Flow Graph (CFG/DFG) model, and then puts forward a feasible test generation method at Register Transfer Level (RTL). Experimental results demonstrate that the method can produce shorter test sequence in less time, and obtains an equal or a little less stuck-at fault coverage at gate-level. Furthermore, the method provides sufficient flexibility due to the adoption of test case technique.
This paper presents a recurrent neural network-based approach for modal parameters identification of structure-unknown systems. The proposed approach involves two steps. The first step is to build a recurrent neural n...
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ISBN:
(纸本)0780384032
This paper presents a recurrent neural network-based approach for modal parameters identification of structure-unknown systems. The proposed approach involves two steps. The first step is to build a recurrent neural network to map the complex nonlinear relation between the excitations and responses of the structure-unknown system by off-line learning. The second step is to propose a procedure to determine the modal parameters of the system from the trained neural networks. The dynamic characteristics of the structure are directly evaluated from the weighting matrices of the trained recurrent neural network. Furthermore, an illustrative example demonstrates the feasibility of using the proposed method to identify modal parameters of structure-unknown systems. The method proposed can be used to research on fault diagnosis of engineer structure.
The disk sanitization practices are studied. computer systems used by people with varying authorization levels typically employ authentication, access control lists, and a privileged operating system to maintain infor...
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The disk sanitization practices are studied. computer systems used by people with varying authorization levels typically employ authentication, access control lists, and a privileged operating system to maintain information privacy. The study indicates that the secondary hard-disk market is almost certainly awash in information that is both sensitive and confidential. If sanitization practices are not significantly improved, it is only a matter of time before the confidential information on repurposed hard drives is exploited by individuals and organizations that would do us harm.
Field tests demonstrated the value of enhancements that enable an advanced nonintrusive load monitoring system to tackle complex monitoring environments. Nonintrusive load monitoring (NILM) can determine the operating...
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Field tests demonstrated the value of enhancements that enable an advanced nonintrusive load monitoring system to tackle complex monitoring environments. Nonintrusive load monitoring (NILM) can determine the operating schedule of electrical loads in a target system from measurements made at a centralized location, such as the electric utility service entry. In contrast to other systems, NILM reduces sensor costs by using relatively few sensors.
OFDM transmitter diversity systems that do not required a cyclic prefix have recently been proposed as means to improve bandwidth efficiency. For these systems, knowledge of the channel parameters is required at the r...
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OFDM transmitter diversity systems that do not required a cyclic prefix have recently been proposed as means to improve bandwidth efficiency. For these systems, knowledge of the channel parameters is required at the receivers for interference cancellation, diversity combining, and decoding, In this paper, we propose a low complexity pilot-symbol-assisted channel estimator for OFDM transmitter diversity systems without a cyclic prefix. The pilot symbols are constructed to be periodic within an OFDM symbol interval in order to avoid ISI and ICI and to be non-overlapping in frequency to allow for the simultaneous sounding of the multiple diversity channels. The time-varying channel responses are then tracked by interpolating a set of estimates obtained through periodically transmitted pilot symbols. The effectiveness and limitations of the proposed estimator are verified by computer simulations.
The growing number of applications for 3D graphics and imaging systems in the mass market requires the customized approach to the design of high-performance 3D graphics and imaging system architectures. That fact coup...
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COLARADO (an acronym for collision avoidance radar able to distinguish obstacles) is a system for use in the control of autonomously driven vehicles, having static radar antennas. By combining the echos, resulting fro...
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Standard user-level networking architecture such as Virtual Interface (VI) architecture enables distributed applications to perform low overhead communication over System Area Networks (SANs). This paper describes how...
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