Difference between revisions of "Glossary of terms"

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| Symbol rate || ||Used in DATV to describe the actual modulation rate after FEC || https://en.wikipedia.org/wiki/Symbol_rate
 
| Symbol rate || ||Used in DATV to describe the actual modulation rate after FEC || https://en.wikipedia.org/wiki/Symbol_rate
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| FEC ||Forward Error Correction ||Digital error correction applied before modulation which repeats some of the information - hence Video Bit Rate is always less than the transmitted Symbol rate||http://abelian.org/fec/pn161218/
 
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Revision as of 12:56, 2 January 2017

This is a table of commonly used phrases by the ATV community.

Term / TLA Definition comment Link
QPSK Quadrature Phase Shift Keying Commonly used digital modulation https://en.wikipedia.org/wiki/Phase-shift_keying
Bit rate Number of bits per second of data - used in DATV to describe the video and audio bit rate before modulation https://en.wikipedia.org/wiki/Bit_rate
Symbol rate Used in DATV to describe the actual modulation rate after FEC https://en.wikipedia.org/wiki/Symbol_rate
FEC Forward Error Correction Digital error correction applied before modulation which repeats some of the information - hence Video Bit Rate is always less than the transmitted Symbol rate http://abelian.org/fec/pn161218/