A. de Cheveigné, "Cancellation principle", last revised: 1 Dec 2003 2 dB for a two-microphone delay-and-add beamformer). Second, jammer cancellation works well in situations where SNR is unfavorable (for which segregation is most needed). In that case estimating jammer structure is easy, whereas estimating target structure is hard. Cancellation has two weaknesses. The first is that the jammer m...

The OPA643 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a de-compensated voltage feedback architecture with two internal gain stages, the OPA643 achieves exceptionally low harmonic distortion over a wide frequency range. The "classic" differential input provides all the familiar benefits of precision op amps, such as bias current cancellation...

The effect of load-pull on 3rd order intermodulation (IM3) radiation characteristics a transmitting active phased array is studied and general model for predicting the spatial distribution fundamental tones products introduced. used data obtained from load pull measured amplifier prototype simulated linear antenna array, which are in co-simulation system behavior. optimized maximum main tone be...

In this paper, we present a frequency band threshold based on wavelet transform (FBT) noise cancellation method. The noise cancellation is enable to improve on the articulation of the speech. Although the edge information of the speech is very important for recognition system to use, most traditional noise cancellation methods based on spectrum analysis smooth these edges of the original speech...

In this paper, we consider low-PMEPR (Peak-to-Mean Envelope Power Ratio) MC-CDMA (Multicarrier Coded Division Multiple Access) schemes. We develop frequencydomain turbo equalizers combined with an iterative estimation and cancellation of nonlinear distortion effects. Our receivers have relatively low complexity, since they allow FFT-based (Fast Fourier Transform) implementations. The proposed t...

The cascoded-compensation or ‘Cascomp’ amplifier offers excellent distortion reduction and thermal distortion rejection, but has not seen widespread use because of a limited gain and increased complexity compared with other topologies. The original theory showed that with the addition of an ideal error amplifier the circuit will completely compensate distortion for suitably chosen degeneration ...

A complete, working document storage and retrieval system is described. Designed to help users solve the problem of lost documents, this system illustrates the concepts of automatic document capture and easy retrieval. Every document a user copies or prints is automatically indexed and saved for later retrieval. A prototype implementation of such a system was constructed and used daily by appro...

A digital sound system resembles the wireless network link transmission system. A wireless network link is affected by several disturbing factors: fading, attenuation, non-linear distortion and noise. These factors are also unavoidable in acoustic echo cancellation. A few number of digital adaptive filter algorithms are approached to detect and cancel the noise in a system. Among these algorith...