scholarly journals Flexible digital signal processing architecture for narrowband and spread-spectrum lock-in detection in multiphoton microscopy and time-resolved spectroscopy

2015 ◽  
Vol 86 (3) ◽  
pp. 033707 ◽  
Author(s):  
Jesse W. Wilson ◽  
Jong Kang Park ◽  
Warren S. Warren ◽  
Martin C. Fischer
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Spread Spectrum ◽  
Multiphoton Microscopy ◽  
Digital Signal ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Lock In ◽  
Processing Architecture

Part II--Digital signal processing architecture

1978 ◽  
Vol 16 (1) ◽  
pp. 23-27 ◽  
Author(s):  
S. Tewksbury ◽  
R. Kieburtz ◽  
J.S. Thompson ◽  
S. Verma
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Processing Architecture

Implementation of a Spread Spectrum Receiver and Modem for the Data-Relay System Using Digital Signal Processing

1993 ◽  
Vol 4 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Andrew John Aftelak ◽  
S. J. Fielding ◽  
Paul Maguire ◽  
Anthony Kim Ward ◽  
Roberto Madde
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Spread Spectrum ◽  
Digital Signal ◽  
Relay System

Polarization Modulation Fourier Transform Infrared Spectroscopy with Digital Signal Processing: Comparison of Vibrational Circular Dichroism Methods

2001 ◽  
Vol 55 (11) ◽  
pp. 1435-1447 ◽  
Author(s):  
Jovencio Hilario ◽  
David Drapcho ◽  
Raul Curbelo ◽  
Timothy A. Keiderling
Keyword(s):  
Signal Processing ◽  
Circular Dichroism ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Vibrational Circular Dichroism ◽  
Polarization Modulation ◽  
Rapid Scan ◽  
Ft Ir ◽  
Lock In ◽  
Circular Dichroïsm

Digital signal processing (DSP) has been implemented in a step-scan FT-IR spectrometer in a modification that enables processing of high-frequency polarization modulation signals. In this work, direct comparison is made between vibrational circular dichroism (VCD) spectra measured on the same instrument, with the same samples, under the same conditions, using this new DSP method and a conventional rapid-scan technique (employing a lock-in amplifier for demodulation). In this initial test, both techniques generated high-quality VCD for solution phase, rigid chiral molecules such α-pinene and camphor. Noise and reproducibility of known spectral features, as well as enhancing signal measurability and discrimination, were used as criteria for the selection of optimal DSP measurement parameters. Both DSP and rapid-scan VCD methods produced qualitatively reasonable spectra for biologically related molecules such as poly-γ-benzyl-L-glutamate, poly-L-proline, and duplex RNA homopolymer. In most cases, the DSP method had a slight signal-to-noise advantage based on standard deviations of the noise trace data over the rapid-scan measurement, but the final results did depend on the details of the data collection and the phase correction methods inherent in both methods.

100 Gbps Wireless System and Circuit Design Using Parallel Spread-Spectrum Sequencing

Frequenz ◽  
2017 ◽  
Vol 71 (9-10) ◽  
pp. 399-414 ◽  
Author(s):  
J. Christoph Scheytt ◽  
Abdul Rehman Javed ◽  
Eswara Rao Bammidi ◽  
Karthik KrishneGowda ◽  
Ingmar Kallfass ◽  
...  
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Circuit Design ◽  
Spread Spectrum ◽  
Digital Signal ◽  
Carrier Synchronization ◽  
Wireless System ◽  
Broadband Wireless ◽  
Processing Techniques ◽  
Signal Processing Techniques

Abstract In this article mixed analog/digital signal processing techniques based on parallel spread-spectrum sequencing (PSSS) and radio frequency (RF) carrier synchronization for ultra-broadband wireless communication are investigated on system and circuit level.

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