when i use fftc to implement pusch 7.5khz frequency shift compensation (frequency plus shift 7.5khz), i cannot get the same result as matlab with the exactly same calculation. the fftc configuration : n0 = 0, shift_factor=2 ( so that a = 4), M=16834, shift_direction = 1 (minus), so that i can make H(n) = exp(-j*pi*n/2048), n = 0,...,2047.
from the same matlab calculation process i get a simulation result , which ,hower is different from the fftc result.
could Ti supporter or anyone else tell me what is the problem in my case, Thanks!