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Peak-to-average Power ratio
is inserted to the signal. When the threshold condition is passed, the
signal will be transmitted; however, if the iterations for both loops
are performed and the PAPR is still not less than the threshold, the
signal with the minimum PAPR among them will be transmitted.
Here, in order to decrease the complexity of the DSI-SLM scheme
and increase the spectrum efficiency, a new phase sequence matrix
is generated. is new phase sequence is based on the generation
of K random values of {1 –1 j –j} in which the number of allowed
phase factor is 4 and K is the IFFT length or number of subcarriers.
Itshould be noted that if the number of allowed phase factor be speci-
fied 2, meaning {1 –1}, then the PAPR performance w