robismyname
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Trying to obtain a good definition of PAPR. The closest I got so far was via: **broken link removed**
"PAPR occurs when, in a multi-carrier environment, the different sub-carriers are out of phase with each other. Thus, at each instant they are offset with respect to each other at different phase values. However, there may come a point when all of them achieve the maximum value simultaneously; this will cause the output envelope to suddenly shoot up. This causes a 'peak' in the output envelope."
So I have a few questions about the definition above:
Is PAPR an issue only in multi carrier technologies like OFDM? Or is it also a problem in single carrier technology like FSK?
Is a communication system that transmits more than 1 bit per symbol considered a multi carrier system? I.E. QPSK, 16QAM, etc.
Also in OFDM the subcarriers are orthogonal (90 degree phase difference) so how does the signal ever achieve the maximum value simultaneously to suddenly shoot up?
"PAPR occurs when, in a multi-carrier environment, the different sub-carriers are out of phase with each other. Thus, at each instant they are offset with respect to each other at different phase values. However, there may come a point when all of them achieve the maximum value simultaneously; this will cause the output envelope to suddenly shoot up. This causes a 'peak' in the output envelope."
So I have a few questions about the definition above:
Is PAPR an issue only in multi carrier technologies like OFDM? Or is it also a problem in single carrier technology like FSK?
Is a communication system that transmits more than 1 bit per symbol considered a multi carrier system? I.E. QPSK, 16QAM, etc.
Also in OFDM the subcarriers are orthogonal (90 degree phase difference) so how does the signal ever achieve the maximum value simultaneously to suddenly shoot up?