摘要:
A digital phase locked loop has a digitally controlled oscillator for generating an output frequency, a phase detector device for detecting the phase difference between a reference frequency and an output frequency of the oscillator. The phase detector device contains a delta-sigma frequency decision maker, and a digital loop filter, connected downstream of the phase detector device, for actuating the digitally controlled oscillator.
摘要:
The invention relates to a heterogeneous parallel multithread processor (1) with shared contexts which has a plurality (M) of parallel-connected standard processor root unit types (2p; pε[1, . . . , M]), where each respective standard processor root unit type (2p) has at least one or more (K) parallel-connected standard processor root units (2pq; qε[1, . . . , K]) for instruction execution of program instructions from various threads (T), each standard processor root unit type (2p) having N local context memories (32pt) which each buffer-store part of a current processor state for a thread. The multithread processor (1) also has a plurality (N) of global context memories (3t; tε[1, . . . , N]) which each buffer-store part of a current processor state for a thread, and a thread control unit (4) which can connect any standard processor root unit (2pq) to any global context memory (3t).
摘要:
An adaptive nonrecursive digital filter includes a first filter unit having N controllable filter coefficients. A control unit controls the filter coefficients as a function of an input signal applied to the first filter unit at a given sampling rate and as a function of a difference between a reference signal and an output signal output by the first filter unit, in accordance with the least mean error square in each case. The first filter unit and the control unit sample the input signal and the reference signal continuously, with a cyclically varying delay, at a correspondingly increased sampling rate. A second filter unit is operated at the given sampling rate and has N controllable filter coefficients. The second filter unit receives the input signal, outputs a further output signal and has filter coefficients also being controlled by the control unit.
摘要:
An integratable circuit configuration includes an analog signal network being subject to fluctuations in a given way. A switched capacitor network is connected in series with the analog signal network and receives settable coefficients. An analog comparison network which is subject to the fluctuations in the given way, receives an excitation signal and supplies a response signal in response to the excitation signal. An evaluation circuit is connected to the analog comparison network and to the switched capacitor network for comparing the response signal with a reference signal and setting the coefficients of the switched capacitor network as a function of the comparison.
摘要:
An integratable circuit configuration includes an analog signal network being subject to fluctuations in a given way. An analog/digital converter is connected downstream of the analog signal network. A digital signal network is connected downstream of the analog/digital converter for receiving settable coefficients. An analog comparison network being subject to the fluctuations in the same given way receives an excitation signal and supplies a response signal in response to the excitation signal. An evaluation circuit is connected to the analog comparison network and to the digital signal network for comparing the response signal with a reference signal and setting the coefficients of the digital signal network as a function of the comparison. According to another embodiment, a digital/analog converter is connected upstream of the analog signal network. Then the digital signal network is connected upstream of the digital/analog converter.
摘要:
In a method and configuration for improving the dynamic range of an adaptive recursive network for processing discrete-time signals, gradient signals are formed from output signals of the network with respect to network parameters. The output signals of the network are compared with set-point signals to form differential signals. Signals of a signum function of the gradient signals are formed. The signals of the signum function are multiplied with the differential signals to form correction signals proportional to the product of the signals of the signum function and the differential signals.
摘要:
Exemplary implementations of electrical circuits and systems are disclosed, and methods for signal processing including sampling and quantizing of amplitude and band limited signals implemented through a Passive Pulse Modulation Analog to Digital Converter (PMADC).
摘要:
The invention relates to a device for correcting a receiver signal which is associated with an emission signal transmitted in a distorted transmission system. The emission signal comprises periods which can be determined by analyzing the received signal wherein determined properties are exhibited which are suitable for adjusting the correction. According to one embodiment, the device comprises a component for adjusting the correction based upon an analysis of the received signal and a component for monitoring and enabling the adjusting component when the received signal associated with the transmission signal exhibits certain characteristics.