| Patent application number | Description | Published |
|---|
| 20080215268 | Signal Outage Detection - Disclosed are various embodiments for outage detection. In one embodiment, an outage detection system includes a signal sampler configured to sample a signal on a communications link and to determine a noise level and a signal level of the sample. An outage detection system also includes a comparator configured to compare a critical value with a sum of signal and noise of the sample. An outage detection system further includes a binomial probability analyzer configured to calculate a binomial probability of false outage of the sample and the previous N samples. | 09-04-2008 |
| 20080304595 | DSP workload distribution in a power line carrier system - Disclosed are various embodiments for dividing workload in a digital signal processing system. In one embodiment, the system includes at least one analog-to-digital converter configured to receive a three phase analog waveform and a digital waveform. The system can also include a first DSP configured to interface with an external computer and a second DSP configured to receive the digital waveform and isolate a specified frequency range. The system can also include a plurality of DSP's configured to extract specified channels from the specified frequency range and output the extracted channel data. | 12-11-2008 |
| 20080307136 | Arbitration of Memory Transfers in a DSP System - Disclosed are various embodiments for arbitration of memory transfers in a digital signal processing system. In one embodiment, a digital signal processing system includes a plurality of DSP's having an external memory. The DSP's are further configurable to act as a master processor and a slave processor relative to another DSP. The system also includes an arbiter configured to maintain DSP status data and arbitrate requests between master processors and slave processors in the system. | 12-11-2008 |
| 20090110121 | Programmable Signal Slicer - Disclosed are various embodiments of a programmable slicer in a digital signal processing system and/or software radio system. In one embodiment, a plurality of demodulation schemes and a plurality of channel definitions are stored in a channel allocation table. An analog waveform is received and converted into at least one digital waveform. A specified frequency range is isolated from the at least one digital waveform. The magnitude of tones within the specified frequency range is measured and stored in a signal magnitude table. Symbols and/or bits are decoded from the signal magnitude table by applying a demodulation schemes and channel definitions to the magnitudes stored in the signal magnitude table. | 04-30-2009 |
| 20090147863 | Input signal combiner system and method - Disclosed are various embodiments of an input signal combiner. In one embodiment, a receive stage receives a multi-phase waveform and separates the multi-phase waveform into a plurality of waveforms. Analog-to-digital converters convert the plurality of analog waveforms into at least one digital signal. At least one gain stage adjusts an amplitude of each of the digital signals and combines the amplitude adjusted digital signals into at least one gain adjusted combined signal. A signal extraction stage extracts an inbound signal from the at least one gain adjusted combined signal according to a demodulation scheme. | 06-11-2009 |
| 20100164615 | System And Method For Relative Phase Shift Keying - Disclosed are various embodiments of systems and methods for relative phase shift keying. In one embodiment, an analog waveform is converted to digital signals. A specified frequency range is isolated and the magnitudes of tones corresponding to a channel are measured. The relative phase of a subset of the tones having the greatest magnitude is measured and a relative phase component is generated. At least one symbol is associated with the subset of tones and the relative phase component. | 07-01-2010 |
