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cyclic extension

   Also found in: Wikipedia 0.01 sec.
cyclic extension [′sīk·lik ik′sten·chən]
(mathematics)
A Galois extension whose Galois group is cyclic.


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Frequency offset synchronization may be performed in receiver in time domain before performing FFT of the incoming signal either by cyclic extension or by using special training symbols.
To solve the ISI problem, a cyclic extension was introduced to the transmitted symbols, known as guard time, but its introduction results into loss of spectral efficiency.
 
 
 
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