Software radio architectures - part 2

Warne, Daniel (2004) Software radio architectures - part 2. [USQ Project] (Unpublished)

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Abstract

Radio modulation simulation programs using Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), and Minimum Shift Keying (MSK) were developed in this Research Project. All programs were written using Matlab 6.5. The success of these programs is attributed to embedding them in a Linear Predictive Speech Coder (LPC10) which only requires 11 parameters (10 coefficients and pitch delay) to be modulated as opposed to a whole block of quantized voice samples. Coherent demodulation is effectively achieved for BPSK by employing a squaring loop which locks onto to a signal that is twice that of the carrier frequency and scales it down. The program works effectively to recover carrier frequencies within an appropriate range. The squaring loop program implements the vital components of filtering, squaring, phase detection, and numerically controlled oscillation in Matlab code. Also included in this dissertation is an introduction to the EZ-KIT Lite Digital Signal Processor (DSP) package developed by Analog Instruments. An investigation of this DSP environment takes steps towards realizing a software radio which executes in real time.


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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Additional Information: Matlab code files submitted with this project are held on CD-ROM in the USQ library.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 11 Oct 2007 00:15
Last Modified: 02 Jul 2013 22:30
Uncontrolled Keywords: radio modulation simulation programs, Matlab 6.5, Linear Predictive Speech Coder (LPC10), EZ-KIT Lite Digital Signal Processor (DSP)
Fields of Research (FOR2008): 09 Engineering > 0906 Electrical and Electronic Engineering > 090609 Signal Processing
08 Information and Computing Sciences > 0801 Artificial Intelligence and Image Processing > 080110 Simulation and Modelling
URI: http://eprints.usq.edu.au/id/eprint/100

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