Topic
Digital signal
About: Digital signal is a research topic. Over the lifetime, 44213 publications have been published within this topic receiving 345279 citations.
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TL;DR: Using oversampling and the finite-alphabet property of digital communication signals, it is possible to blindly identify an FIR channel carrying a superposition of such signals, provided they have the same (known) period.
Abstract: Using oversampling and the finite-alphabet property of digital communication signals, it is possible to blindly identify an FIR channel carrying a superposition of such signals, provided they have the same (known) period, and certain rank conditions on the data and channel matrices are satisfied. In particular, this technique allows separation of finite alphabet signals, removal of intersymbol interference, and synchronization of the signals. An algorithm is proposed and tested on simulated data. >
111 citations
Patent•
04 Feb 2011
TL;DR: In this paper, the basic configuration includes first to fourth transistors and four wirings, and each transistor to the fourth transistor can be turned off by any combination of the potentials.
Abstract: To provide a circuit used for a shift register or the like. The basic configuration includes first to fourth transistors and four wirings. The power supply potential VDD is supplied to the first wiring and the power supply potential VSS is supplied to the second wiring. A binary digital signal is supplied to each of the third wiring and the fourth wiring. An H level of the digital signal is equal to the power supply potential VDD, and an L level of the digital signal is equal to the power supply potential VSS. There are four combinations of the potentials of the third wiring and the fourth wiring. Each of the first transistor to the fourth transistor can be turned off by any combination of the potentials. That is, since there is no transistor that is constantly on, deterioration of the characteristics of the transistors can be suppressed.
111 citations
Book•
24 Jun 2001
TL;DR: A crash course in Digital Signal Processing, with a focus on DFT and FFT Processing, and how to programming DSPs.
Abstract: 1. Crash Course in Digital Signal Processing. 2. Analog-to-Digital and Digital-to-Analog Conversion. 3. Digital Signals. 4. Difference Equations and Filtering. 5. Convolution and Filtering. 6. z Transforms. 7. Fourier Transforms and Filter Shape. 8. Digital Signal Spectra. 9. Finite Impulse Response Filters. 10. Infinite Impulse Response Filters. 11. DFT and FFT Processing. 12. Hardware for DSPs. 13. Programming DSPs. 14. Signal Processing. 15. Image Processing. 16. Wavelets. References. Appendices. Index.
111 citations
Patent•
11 Apr 2000
TL;DR: In this paper, a portable signal transfer unit for relaying a signal representative of physiological data of a mammalian subject from a remote physiological sensor (S) to a remote receiver unit (R) is described.
Abstract: This invention is a portable signal transfer unit (12) for relaying a signal representative of physiological data of a mammalian subject (S) from a remote physiological sensor (10) to a remote receiver unit (16).
110 citations