NDLI: Coherent (VQ) Detector Error Analysis Software

Content Provider	IEEE Xplore Digital Library
Author	Bradley, K.
Copyright Year	1985
Description	Author affiliation: TEXAS INSTRUMENTS (Bradley, K.)
Abstract	Software for analysis and alignment of I/Q Detectors is described using the results developed by Kyle in " Precision Alignment of I/Q Detectors Using Fourier Transforms". The relationship of the continuous and discrete Fourier transforms is described. The measurement technique uses two locked synthesizers to provide sinusoidal responses at the outputs, I and Q, of the detector. Measurement data acquisition uses sampling techniques to obtain time sequences of the detector I and Q outputs. The sampling process is performed by a Tektronix 390AD giving 2048 values (10 bits each) for each input. The 390AD data is processed to give floating point time samples of the I and Q response. Availability of the time response sequences permits use of digital signal processing techniques for detector characteristics analysis. Discrete Fourier Transforms are introduced and compared with the continuous tranforms. The FFT of the time sequences i (t), q (t) are performed resulting in frequency domain (spectrum) sequences I (n) and Q (n). The spectral coefficients are identified for the input signal and analyzed to determine ka, the detector amplitude balance, and ¿, the detector phase error. The power spectrum is developed and Image Rejection is evaluated. The power spectrum is plotted with the amplitude balance, phase error, and image rejection shown. Finally window functions are shown to provide equivalent results for the non-ideal i (t) and q (t) sequences. The technique is shown to provide fast-accurate results of the determination of I/Q detector characteristics.
Starting Page	215
Ending Page	231
File Size	589679
Page Count	17
File Format	PDF
ISBN	0780356861
DOI	10.1109/ARFTG.1985.323631
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1985-06-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Error analysis Discrete Fourier transforms Signal analysis Phase detection Fourier transforms Measurement techniques Synthesizers Q measurement Time measurement
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A coherent sinusoidal detector using phase compensation

Improving coherent tonal detection with phase interpolation and compensation

An algebraic approach to discrete short-time Fourier transform analysis and synthesis

Investigation of different frequency estimation techniques using the phase vocoder

Coherent structure detector and likelihood ratio test

An audio signal scaling technique harmonic grouping and shifting

A new GNSS signal acquisition algorithm based on cross-correlation sequence with reduced signal-receiving time

Symbol error rate evaluation for OFDM systems with MPSK modulation

Rate/Pitch modification of speech using the constant-Q transform

Coherent (VQ) Detector Error Analysis Software

Similar Documents

A coherent sinusoidal detector using phase compensation

Improving coherent tonal detection with phase interpolation and compensation

An algebraic approach to discrete short-time Fourier transform analysis and synthesis

Investigation of different frequency estimation techniques using the phase vocoder

Coherent structure detector and likelihood ratio test

An audio signal scaling technique harmonic grouping and shifting

A new GNSS signal acquisition algorithm based on cross-correlation sequence with reduced signal-receiving time

Symbol error rate evaluation for OFDM systems with MPSK modulation

Rate/Pitch modification of speech using the constant-Q transform

Coherent (VQ) Detector Error Analysis Software