Experimental results derived using real-time hardware together with supporting software simulations reveal that for infinite impulse response digital filters low-level chaos acts as self-dither, which both decorrelates truncation distortion and aids linearization of low-level digital-to-analog conversion nonlinearity. The process is examined for a range of filter responses, in particular those ...

Data acquisition and conversion systems interface between the real world of physical parameters, which are analog, and the artificial world of digital computation and control. With current emphasis on digital systems, the interfacing function has become an important one; digital systems are used widely because complex circuits are low cost, accurate, and relatively simple to implement. In addit...

Data acquisition and conversion systems interface between the real world of physical parameters, which are analog, and the artificial world of digital computation and control. With current emphasis on digital systems, the interfacing function has become an important one; digital systems are used widely because complex circuits are low cost, accurate, and relatively simple to implement. In addit...

The operating principle of pipelined analog-to-digital converter (ADC) is to subtract, sequentially along the cascaded stages, different reference voltages from the analog sample. This operation, nevertheless, creates internally an input-dependent fluctuation on the reference voltage. Such kind of signal-dependent error cannot be eliminated by trimming and/or calibration. The effect is especial...

The principle of software radio architecture is investigated and applied for the implementation of a multi-standard terminal (MST) for operation with both current 2nd and future 3rd generation mobile radio systems. A key strategy for the design of the transceiver is to place the analog-to-digital converter (ADC) and digital-to-analog converter (DAC) as close as possible to the antenna. In addit...

This thesis tackles the problem of data conversion in the Residue Number System (RNS). The RNS has been considered as an interesting theoretical topic for researchers in recent years. Its importance stems from the absence of carry propagation between its arithmetic units. This facilitates the realization of high-speed, low-power arithmetic. This advantage is of paramount importance in embedded ...

This paper summarizes the multilevel power conversion technologies published in the IEEJ Transactions on Industry Applications and presented at IEEJ Technical Meetings on Semiconductor Power Converter or Japan Industry Applications Society Conferences (JIASC) as well as international conference proceedings and journals. This survey includes various types of circuit topologies from the first neu...

The least-mean-square (LMS) algorithm is an adaptation scheme widely used in practice due to its simplicity. In some applications the involved signals are continuous-time. Then, usually either a fully analog implementation of the LMS algorithm is applied or the input data are sampled by analog-to-digital (AD) converters to be processed digitally. A purely digital realization is most often the p...

In this paper, a digital compensation scheme for coefficient errors of a complex filter bank parallel A/D converter in low-IF receivers is presented. The complex filter bank is employed to suppress DC offset and image signals in the lowIF receivers and relax the requirements on the conversion rate and resolution of A/D converters. The proposed compensation scheme regenerates interference due to...

the mixed-signal circuits with both analog and digital blocks on a single chip have wide applications in communication and rf circuits. integrating these two blocks can cause serious problems especially in applications requiring fast digital circuits and high performance analog blocks. fast switching in digital blocks generates a noise which can be introduced to analog circuits by the common su...