Itron Gmbh

Hewlett-packard Company

Michael David McNamee

Danny Ray Seely

Fred Herbert Ives

William J Dickerson

Robert T Dickerson

Junsong Lin

Mark D Talbot

In a radio using a plurality of channels defined in a radio frequency (RF) spectrum, a rate of false packet detections may be calculated for each of the plurality of channels using a plurality of respective correlation thresholds. The rate of false packet detections for each channel may be compared to a range of acceptable rates of false packet detections. The same or different ranges of acceptable rates of false packet detections may be used for each channel or each channel plan. Different correlation thresholds may be adjusted based at least in part on the comparisons. For example, if a rate of false packet detections exceeds a range of acceptable rates of false packet detections, the correlation threshold may be raised, or the reverse. A packet may be detected on different channels based on different adjusted correlation thresholds.

Radio with dynamically controlled correlation threshold

An example method of receiving a data packet includes receiving a data packet at a channel receiver of at least one channel receiver each associated with a channel, providing the data packet to a data packet identification block that corresponds to the channel receiver, validating the data packet at the data packet identification block, and providing the validated data packet to an available decoder block of at least one decoder block capable of performing one or more decoding functions, where a quantity of the decoder blocks is less than a quantity of the data packet identification blocks and optimized according to one or more goals. If no decoder block is available and the validated data packet is a higher priority data packet, a decoder block processing a lower priority data packet may be forced to stop processing the lower priority data packet and process the higher priority data packet.

Multi-channel decoder architecture

A multichannel radio receiver may include a radio frequency (RF) subsystem and a digital subsystem. The digital subsystem may be configured to use an analog to digital converter (ADC) to sample input. A channelizer bank within the digital subsystem may include a plurality of channelizers. Each channelizer may receive and translate input into a plurality of channels, the channels having widths that are non-uniform and/or spacing (e.g., spacing center-to-center of adjacent channels) that is not regular. The translation may include re-sampling channels at a rate associated with a modulation scheme. A decoder bank may include a plurality of decoders operating in parallel, each to receive input from a channelizer and each associated with a particular modulation scheme. Thus, the multichannel radio may simultaneously receive on a plurality of channels of arbitrary location, arbitrary spacing and/or arbitrary bandwidth, wherein each channel is associated with one of a plurality of modulation schemes.

Radio to support channel plans of arbitrary width and/or spacing

A four-channel multifunction digital frequency synthesizer which uses direct numerical synthesis to generate one or more complex output signals having selectable frequency, phase offset, amplitude level and waveform is provided. A waveform synthesizer digitally synthesizes precise sine, square, triangle, ramp, uniform and Gaussian noise and DC waveforms which can be selected for any of the four channels. One of the four channels can be frequency, phase and amplitude modulated by the signals on the remaining three channels in any combination. The four channels are time-multiplexed which allows the use of a single frequency synthesizer to realize four independent channels and a large number of support functions and capabilities in a high-density VLSI integrated circuit on a single chip. The synthesizer system can provide up to four independent output signals which can be any one of the four channel signals, or any combination of the four channel signals summed to form a complex waveform signal.

Growing community of inventors

Spokane, WA, United States of America

Michael David McNamee