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Unavoidable process random variation causes mismatches to deviate the performance of many analog circuit blocks. In addition, the correlation between components is also related to the performance parameters of analog circuits. This paper proposes a layout strategy to reduce the random error by making the trade-offs among performance parameter, correlation coefficient, and area allocation cost. Simulation...
An inverter-based low-voltage current feedback amplifier (CFA) is proposed in the paper. The proposed current conveyor is based on an inverter-based low-voltage second-generation current conveyor (CCII) and an inverter-based buffer. There are no on-chip capacitors in the proposed current conveyor, and it can be designed with standard CMOS digital processes, hence will reduce the cost of chip fabrication...
A new particle swarm optimization (PSO) algorithm solving dynamic constrained optimization problem (DCOP) is proposed in this paper. First, the time period of DCOP was divided into several small estequal subperiods. In each subperiod, the DCOP is approximated by a static constrained optimization problem, Thus, the original DCOP is approximately transformed into several static constrained optimization...
Spectrum is always a kind of rare resource in wireless communication especially in wireless mesh networks (WMNs) which own the wireless connectivity backbone. But in most cases we seldom take full advantage of the spectrum. This problem can be alleviated by the cognitive radio paradigm that aims at devising spectrum sensing and management techniques, thereby allowing radios to intelligently locate...
In this paper, a new evolutionary algorithm (EA) to solve multi-objective constrained optimization problem (MCOP) is proposed. First, the rank of the individual and the scalar constraint violation of the individual are defined. Then, based on the rank and the scalar constraint violation of the individual, a new fitness function and a switch selection operator are presented. Accordingly, when the individuals...
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