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Electronic device, variable rate transmission method, and signal reconstruction method

An electronic device and signal technology, applied in sensors, electrical components, medical science, etc., can solve the problems of reducing reconstruction quality, lack of processing different types of noise and interference, etc., and achieve the effect of improving reconstruction performance

Active Publication Date: 2021-09-17
MEDIATEK INC
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Problems solved by technology

However, if the required signal-to-noise (SNR) is 20 dB or more, the usual fixed basis, such as wavelet-based CS design, can only achieve 2 Compression Ratio (CR) up to 2.5
In addition, the reconstruction algorithms employed by common data aggregators (such as smartphones) need to run until the signal is fully restored, and early stopping caused by computational constraints can significantly reduce the reconstruction quality
Furthermore, reconstruction algorithms employed by usual data aggregators such as smartphones lack the ability to deal with different types of noise and interference

Method used

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  • Electronic device, variable rate transmission method, and signal reconstruction method
  • Electronic device, variable rate transmission method, and signal reconstruction method
  • Electronic device, variable rate transmission method, and signal reconstruction method

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[0027] There are many tradeoffs in system design. For example, the compression ratio, dictionary size, and settings of the reconstruction algorithm all affect quality and speed. Higher compression ratios result in lower quality and faster processing, and lower compression ratios result in higher quality and slower processing. Smaller dictionary sizes result in lower quality and faster processing, and larger dictionary sizes result in higher quality and slower processing. A reconstruction algorithm that stops early results in lower quality and faster processing, while a reconstruction algorithm that runs to full completion results in higher quality and slower processing. In order to achieve a balance between compression ratio and reconstruction quality / speed, the present invention proposes a variable rate transmission scheme. In order to achieve a balance between dictionary size and reconstruction quality / speed, the present invention proposes a multi-resolution / multi-scale re...

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Abstract

The present invention provides an electronic device, a variable rate transmission method and a signal reconstruction method. The electronic device includes a sending circuit and a processing circuit, and the processing circuit is configured to output a CS sample corresponding to a signal segment to another electronic device via the sending circuit. The first part is further configured to selectively output the second part of the CS samples corresponding to the signal segment to another electronic device via the sending circuit according to the response of the other electronic device. The present invention flexibly processes CS samples by adopting variable rate transmission schemes, multi-resolution / multi-scale reconstruction schemes, multi-level reconstruction schemes, and feature point constraints, which can provide high compression ratios for various types of biological signals and can process different types of noise and interference to achieve more accurate reconstruction results and improve reconstruction performance.

Description

technical field [0001] The present invention relates to compressive sensing (CS), and in particular, to an electronic device and method capable of flexibly processing CS samples. Background technique [0002] Wearable sensor devices are increasingly used in medical monitoring, where high energy efficiency, small form factor, multi-signal sensing capabilities, and wireless communication capabilities are critical. A typical bio-sensor system consists of biosensor nodes (e.g., wearable biosensor devices) that can send information to a data aggregator (e.g., a smartphone) that can receive and process biosensor output data . One limitation of wearable biosensor devices is their power consumption. These wearable biosensor devices need to operate for relatively long periods of time, avoiding frequent battery replacement or charging. In general, most of the power is consumed by the transmit (TX) circuit (especially the power amplifier (amplifier, PA) of the TX circuit). One solu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/30
CPCH03M7/3059A61B5/0024A61B5/021A61B5/0261A61B5/6802H03M7/3062A61B2503/10A61B5/7232A61B5/318H03M7/3088A61B5/0002
Inventor 周强王华许云翔彭宝杞
Owner MEDIATEK INC
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