On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics Rejection Transceivers

Li, Chunshu; Li, Min; Verhelst, Marian; Bourdoux, André; Perre, Liesbet Van der; Pollin, Sofie

doi:10.1109/tcsi.2014.2348054

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…Due to the poor natural conditions of imaging under multiple illumination background, the image obtained by imaging equipment is usually blurred and produces color aberration, which is sensitive to the difference between the external environment and the surrounding color, resulting in errors and distortions in the imaging equipment's viewtaking and intelligent analysis, and reduces the imaging quality. In the traditional method, the fuzzy image color white balance of chromatic aberration compensation technology mainly uses the compensation method based on multi-scale weighted [5], Harri, corner detection based white balance chromatic aberration compensation method [6], and white balance chromatism compensation method based on edge contour integration, and so on [7]. is method is based on the noise reduction processing of blurred images.…”

Section: Related Workmentioning

confidence: 99%

[Retracted] Using Color Difference Compensation Method to Balance and Repair the Image of Art Design

Ji¹,

Shang

2021

Complexity

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In the case of complex illumination background, the image has fuzziness and chromatic aberration, which can improve the imaging effect of the image by white balance chromatic aberration compensation. The traditional method uses the contour feature fusion adaptive matching method to compensate the white balance under the complex illumination background, which leads to the good color difference compensation effect when the image pixel is low. A white balance color compensation algorithm for fuzzy chromatic aberration based on wavelet packet decomposition is proposed. The original image was denoised and filtered. The white balance characteristics of the image were analyzed and extracted based on the wavelet packet decomposition method, and the adaptive balance design was carried out to realize the white balance and color difference compensation of the art design chromatic aberration image. By using the known pixel information of the image block to be repaired, the statistical properties of the image block to be repaired are predicted, and the matching cost of the image block to be matched that meets the restriction conditions is calculated. By introducing the objective factor, the matching cost function is improved to balance the restoration process, and the unnatural problem caused by the repeated appearance of some image details in the restoration results is solved. The simulation results show that the method can effectively balance the color difference of the image, improve the aesthetic feeling of the image, and improve the performance of the detail features of the image. The peak signal-to-noise ratio is high.

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Section: Related Workmentioning

confidence: 99%

[Retracted] Using Color Difference Compensation Method to Balance and Repair the Image of Art Design

Ji¹,

Shang

2021

Complexity

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“…Different other techniques like use of shorting pin and slots [6], defected ground structure (DGS)-integrated feed [7], pair of quarter wavelength resonator with capacitive feeding structure [8], hairpin filter [9], integration technique with PIFA (planar inverted-F Antennas) [10] etc, have also been reported for HOM suppression in microstrip antennas. It is very well known that the non-linear active components such as power amplifier (PA) (in a Tx module) and low-noiseamplifier (LNA) and local oscillator (LO) (in a Rx module) are a few prime sources of spurious harmonic generation in a RF transceiver [11], [12]. Apart form these non-linear components, as mentioned earlier the passive component like microstrip antenna also equally responsible for harmonic generation in a transceiver module [1] - [10].…”

Section: Introductionmentioning

confidence: 99%

A Four-Port CSRR-Loaded Dual-Band MIMO Antenna With Suppressed Higher Order Modes

Dash

Sarkar

2022

IEEE Access

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In this paper, we propose a compact four-port dual-band MIMO antenna with suppressed higher order modes (HOMs). First, complementary split ring resonator (CSRR) loading is used on a square microstrip antenna to achieve simultaneous miniaturization and dual-band response. Next, the HOMs in the proposed CSRR loaded MIMO configuration are analysed using equivalent circuit model as well as surface current distribution plots. By placing a single shorting post close to antenna center line, these HOMs of the four-port dual-band MIMO antenna are then suppressed, while maintaining satisfactory mutual coupling (< −11 dB) and impedance matching (< −15 dB) performance in the operating band. Furthermore, simulated and measured values of total active reflection coefficient (TARC), envelop correlation coefficient (ECC) and channel capacity loss (CCL) are within the desired levels of −10 dB, 0.5 and 0.5 bits/s/Hz respectively, signifying good diversity performance of the proposed MIMO antenna. INDEX TERMSComplementary Split Ring Resonator (CSRR), Higher Order Modes (HOMs), Microstrip Antenna, Multiple Input Multiple Output (MIMO).

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Digital Cancellation of Harmonic and Intermodulation Distortion in Wideband SAW-Less Receivers

Babakrpur

Namgoong

2018

IEEE Trans. Circuits Syst. II

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On the General Mathematical Framework, Calibration/Compensation Method, and Applications of Non-Ideal Software Defined Harmonics Rejection Transceivers

Cited by 6 publications

References 26 publications

[Retracted] Using Color Difference Compensation Method to Balance and Repair the Image of Art Design

[Retracted] Using Color Difference Compensation Method to Balance and Repair the Image of Art Design

A Four-Port CSRR-Loaded Dual-Band MIMO Antenna With Suppressed Higher Order Modes

Digital Cancellation of Harmonic and Intermodulation Distortion in Wideband SAW-Less Receivers

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