Tellambura, "A simplified clipping and filtering technique for PAR reduction in OFDM
systems," IEEE Signal Processing Letters, vol.
Wiesbeck, "An OFDM
system concept for joint radar and communications operations," in Proceedings of the VTC Spring 2009--IEEE 69th Vehicular Technology Conference, 2009.
This is one of the simplest ways to reduce PAPR in an OFDM
system, but as we will see below that the simplicity in the approach brings an advantage along with several disadvantages.
The receiver part contain a dual polarization coherent detection where the optical signal is detected and converted into an electrical signal, an OFDM
demodulation dual polarization is used to demodulate the waveform using the inverse transform of that used in the transmitter, a QAM decoder which is used to change the samples into bits.
Digital Fourier Transform (DFT) is performed to enable implementing OFDM
and even makes it over performs the well-implemented single carrier systems.
When all of the subcarriers in an OFDM
system have the same phases, it's possible to reach the maximum power which results in mean | s(t) [|.sup.2] = 1, this makes the PAPR = N which means the maximum power equals N times the mean power.
B, "The reduction of PAPR in OFDM
systems using clipping and SLM method," in Proc.
(2015) for detecting impulsive-noise in PLC using orthogonal frequency division multiplexer (OFDM
The statistics for the PAPR of an OFDM
signal can be given in terms of its complementary cumulative distribution function (CCDF).
Therefore, the space-domain steering vector a([theta], R) of OFDM
radar echo signal includes direction steering vector a([theta]) in (14) and distance steering vector a(R), that is,
The electric field spectrum of the transmitted optical signal is a replica of the baseband RF OFDM
signal, with no need for any optical carrier component to be transmitted.
In view of the above, we give an OFDM
phase-coded stepped-frequency (OFDM-PCSF) based strategy as an improvement to  by combining the intrapulse (within the pulse) phase coding and interpulse (among different pulses) SF modulation.