Release version of "Obtain the optimum FFT size as a function of performance "
Cyclic prefix shift enhances the channel estimation averaging effect.
Also, delay and phase compensation for precomp_en =1 is edited.
Merge branch 'master' of https://github.com/miroandi/COOFDM, Small changes
Remained conflict
Conflicts:
	matlab/Init_files/InitOFDM_11Sept.m
	matlab/Init_files/InitOFDM_FFTSize.m
	matlab/Run_files/run_BER_precomp.m
Cyclic prefix shifting makes pulse broadening, So I removed it.
Cleaner version, filter update
Add filters ( Square root raised cosine )
By averaging considering syncpoint, the performance is increased. ISFA considering sync point.
Add SRRC filter.
Cyclic prefix shift, anyway it does not matter, CPshift should be zero.
Add path"filter"
Update en_ISFA.
Update Run_CFO/run_all_BER_CFO_4QAM.m ( Add some variables initialization).