Management of OCDMA Auto-Correlation Width by Chirp Manipulation Using SOA

SOA/SPD-based incoherent SAC-OCDMA system at 9×5Gbps

Pulsewidth and Chirp of SOA-EAM Ring Mode-Locked Lasers

Generation of high-quality short pulses at repetition rates in the GHz range is a key function for OTDM and WDM transmission and signal processing systems. In particular, active mode-locking can be used to produce stable and well synchronized ultrashort pulses suitable for such applications. In this paper, an analytical model of an actively modelocked SOA-EAM ring laser is derived and used to p...

Multiple scale correlation of chirp signal by discrete wavelet transform

Chirp Signal, a finite duration pulse with Linear Frequency Modulation (LFM) is the signal waveform widely used for coherent image formation. Coherent imagery is derived essentially as a 2-dimensional correlation of received, delayed chirp waveform with a 2dimensional matched filter. There is wide and active research interest in analyzing coherent imagery at multiple scales for multiresolution ...

Lumen Boundary Motion Analysis by Auto-correlation

We describe a method for extracting boundaries, such as the lumen of a vessel, from digitized intravascular ultrasound (IVUS) frames from a S-VHS video, together with other useful parameters for each frame. Autocorrelation of the lumen and other parameters, a timeseries analysis, shows underlying regularity in the variation of lumen area through the heartbeat, and systematic variation of the ci...

an investigation into translation of cultural concepts by beginner and advance student using think – aloud protocols

this research aims at answering the questions about translation problems and strategies applied by translators when translating cultural concepts. in order to address this issue, qualitative and quantitative study were conducted on two groups of subjects at imam reza international university of mashhad. these two groups were assigned as beginner and advanced translation students (10 students). ...