Abstract: Systems and methods are disclosed for detecting tremors in a subject. One method comprises receiving data from a digital device, the data comprising a plurality of digital device positions and a plurality of timestamps, each timestamp in the plurality of timestamps being associated with a digital device position in the plurality of digital device positions. The method further comprises determining a plurality of frequencies of hand movements of the subject based on the plurality of digital device positions and plurality of timestamps. The method further comprises determining a subportion of the data corresponding to frequencies of hand movements above a low tremor threshold, and determining a magnitude of tremors of the subject's hand based, at least in part, on the subportion of the data.

Abstract: Methods and supporting systems for allocating a resource among multiple agents are disclosed. Multipoint-to-multipoint communication is established among the agents, with each agent using an amount of a resource. A first agent receives information associated with the resource usage of a second agent and determines the difference in resource usage between itself and the second agent. Based in part on the resource usage difference, the first agent is controlled to modify its use of the resource.

Abstract: Systems and methods are disclosed for detecting tremors in a subject. One method comprises receiving data from a digital device, the data comprising a plurality of digital device positions and a plurality of timestamps, each timestamp in the plurality of timestamps being associated with a digital device position in the plurality of digital device positions. The method further comprises determining a plurality of frequencies of hand movements of the subject based on the plurality of digital device positions and plurality of timestamps. The method further comprises determining a subportion of the data corresponding to frequencies of hand movements above a low tremor threshold, and determining a magnitude of tremors of the subject's hand based, at least in part, on the subportion of the data.

Abstract: Methods and supporting systems for allocating a resource among multiple agents are disclosed. Multipoint-to-multipoint communication is established among the agents, with each agent using an amount of a resource. A first agent receives information associated with the resource usage of a second agent and determines the difference in resource usage between itself and the second agent. Based in part on the resource usage difference, the first agent is controlled to modify its use of the resource.

Abstract: Methods and supporting systems for allocating a resource among multiple agents are disclosed. Multipoint-to-multipoint communication is established among the agents, with each agent using an amount of a resource. A first agent receives information associated with the resource usage of a second agent and determines the difference in resource usage between itself and the second agent. Based in part on the resource usage difference, the first agent is controlled to modify its use of the resource.

Abstract: Methods and supporting systems for allocating a resource among multiple agents are disclosed. Multipoint-to-multipoint communication is established among the agents, with each agent using an amount of a resource. A first agent receives information associated with the resource usage of a second agent and determines the difference in resource usage between itself and the second agent. Based in part on the resource usage difference, the first agent is controlled to modify its use of the resource.

Abstract: The present invention is directed toward an apparatus and method for receiving signals, demodulating the signals and shaping the correlation of the output of a correlation demodulator. The present invention can be used irrespective of whether the received signals have noise components that are Gaussian or non-Gaussian. Moreover, the present invention can be utilized when a predetermined set of received signals is linearly independent or linearly dependent.

Abstract: A receiver for and method of processing received signals comprising a linear combination of a plurality of signature signals having undergone some distortion. The receiver is comprised of a bank of correlators for receiving the signals, and a correlation shaper operating on a vector output from the bank of correlators. The bank of correlators may comprise a matched filter receiver or a decorrelator receiver. Optionally, a bank of detectors may operate on the vector output of the correlation shaper.

Abstract: A system for modulating and demodulating signals that provides a new class of signal modulators and their corresponding demodulators. The modulation scheme embeds in an information signal a carrier signal by modulating the oscillatory rate of the carrier signal. The invention generalizes the possible carrier signals to any signal which can be generated by a dynamical system that have a known exponentially convergent observer, as in certain chaotic systems.

Abstract: A system for modulating and demodulating signals that provides a new class of signal modulators and their corresponding demodulators. The modulation scheme embeds in an information signal a carrier signal by modulating the oscillatory rate of the carrier signal. The invention generalizes the possible carrier signals to any signal which can be generated by a dynamical system that have a known exponentially convergent observer, as in certain chaotic systems.

Abstract: The present invention is directed toward an apparatus and method for receiving signals, demodulating the signals and shaping the correlation of the output of a correlation demodulator. The present invention can be used irrespective of whether the received signals have noise components that are Gaussian or non-Gaussian. Moreover, the present invention can be utilized when a predetermined set of received signals is linearly independent or linearly dependent.

Abstract: A receiver for and method of processing received signals comprising a linear combination of a plurality of signature signals having undergone some distortion. The receiver is comprised of a bank of correlators for receiving the signals, and a correlation shaper operating on a vector output from the bank of correlators. The bank of correlators may comprise a matched filter receiver or a decorrelator receiver. Optionally, a bank of detectors may operate on the vector output of the correlation shaper.

Abstract: An apparatus and method for subband signal coding, using algorithms of comparable complexity to conventional coders, that exploits a noisy analog signal at the decoder. It is assumed that the analog signal is the output of a channel through which the source is sent uncoded. By using the analog signal at the receiver, the required digital bit rate is able to be reduced while offering comparable fidelity to conventional coding systems that ignore the analog signal. Concepts from conventional subband coding, e.g., subband decomposition, quantization, bit allocation, and lossless bitstream coding, are tailored to exploit the analog signal at the receiver such that frequency-weighted mean-squared error (MSE) is minimized. Because subband coefficients are coded, all results pertaining to perceptual masking are easily applied to this method of coding.

Abstract: A noise reducing system includes an input transducer that energizes an adaptive filter. The adaptive filter energizes an output transducer that creates a noise reducing field at the input transducer.

Abstract: A chaotic transmitter (100) operates according to preselected chaotic protocols, such as a set of Lorenz equations. Modulation is accomplished by modifying a predetermined parameter of the set of chaotic Lorenz equations with a message signal, thereby producing a spread spectrum chaotic transmitted signal. A corresponding receiver (200) reconstructs a synchronizing drive signal, which is used by a demodulator (412) of the receiver (200) to detect the message signal.

Abstract: A communication system is provided in which a transmitter performs modulation upon a number sequence to be transmitted. The modulation scheme includes embedding a sequence of numbers into a waveform such that the sequence is present in the waveform on multiple time scales. The transmitted waveform has a selected number of different frequency bands of successively doubling bandwidths. Each of the frequency bands includes the sequence of numbers, repeated therein at a certain rate. The rate is directly proportional to the bandwidth of the frequency band. The communication system further includes a receiver designed to average the value of the repeated sequence as received by the receiver. This scheme allows for accurate communication over noisy, uncertain, and/or hostile channels in both point to point and broadcast communication applications.

Abstract: A system separates unknown signals which have been combined together through unknown linear filters and for which observations at multiple sensors are made. In a two channel circuit with two inputs and two sensors, the reconstructed source signals are assumed to be decorrelated such that the cross-correlation between the reconstructed source signals is near zero. The transfer functions which represent the crosstalk processes are estimated. The output signals are detected and the transfer functions are recursively solved. A reconstruction filter is used to recover the original input signals.