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This repository contains documentation for the INLS718 Spring 2017 semester project.
GNU Lesser General Public License v3.0
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Important Blocks: PSK #20

Open hAlbertK opened 7 years ago

hAlbertK commented 7 years ago

documentation on PSK

griffinac commented 7 years ago

Phase Shifting Key - a modulation scheme that conveys data by changing (modulating) the phase of a reference signal (the carrier wave). The demodulator which is designed specifically for the symbol-set used by the modulator, determines the phase of the received signal and maps it back to the symbol it represents, thus recovering the original data. Constellation diagrams represent PSK schemes.

1. How info is mapped currently in GRC? Control: PSK Demod: User drags it into the flowgraph, then assigns it an ID, number of constellations, samples/symbol, excess BW, frequency BW, timing BW, and phase BW. These fields are already populated with numbers and colors (not sure what they mean). The gray code, differential encoding, verbose and log fields have drop down menus for choice of “yes”, “no”, or “on”, “off.” In the box at the bottom, it shows the users if the source and sink port are connected.

PSK Mod:User drags it into the flowgraph, then assigns it an ID, number of constellations, samples/symbol, and excess BW. These fields are already populated with numbers and colors (not sure what they mean). The gray code, differential encoding, verbose and log fields have drop down menus for choice of “yes”, “no”, or “on”, “off.” In the box at the bottom, it shows the users if the source and sink port are connected.

Effect: Properties are modified if needed.

2. What is a more effective way of doing that? Suggestions: Identify what the colors mean and provide more description in each field when the user places mouse over it. (I.e., in the PSK Demod, when users places mouse over Excess BW field, a description and example would be useful.)