Essays about: "8PSK"

Found 2 essays containing the word 8PSK.

1. 1. Frequency Noise in Widely Tunable Lasers for Coherent Communication

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Gabriela Cristina Dascalu; [2013]
   Keywords : ;

   Abstract : The objectives of this thesis are to measure the frequency noise of a widely tunable semiconductor laser, determine the main causes for the frequency uctuations and investigate the requirements for laser frequency noise for mQAM modulation formats by means of simulations. The following theoretical aspects are covered: the derivation of the frequency noise spectrum and the detuned loading effect from the rate equations; the shape and the causes of the frequency noise power spectral density; the derivation of the linewidth spectrum from white and 1/f frequency noise; the functionality of the laser and feedback loop used for the measurements. READ MORE

3. 2. Output Power Calibration Methods for an EGPRS Mobile Platform

   University essay from Institutionen för systemteknik

   Author : Hans Eriksson; [2003]
   Keywords : Datorteknik; GMSK; GSM; 3pi 8-8PSK; EDGE; EGPRS; Output power calibration; Datorteknik;

   Abstract : This thesis deals with output power calibration of a mobile platform that supports EGPRS.Two different topics are examined. First some different measurement methods are compared concerning cost efficiency, accuracy, and speed and later measurements are carried out on a mobile platform. READ MORE