Digiatal Sampling correction Interpolation/Decimation in e OFDM Modem

Hi all,
My project is Digiatal Sampling correction Interpolation/Decimation for
application in flexible OFDM Modem.
I'm implementing in Matlab the 5_taps optimized interpolator which will
improve the performance for long data OFDM bursts.
I used control parameters basepoint index (m(k)) and fractional interval
(mu(k)) (reference to FM Gardners article "Interpolation In Digital
Modems---PART1: Fundamentals"):

   m(k)=int[k*Ti/Ts]    (1)
   mu(k)=k*Ti/Ts - m(k) (2) 

But I have a problem as follow:
   Define e(m,0) is timing error of m-th symbol: 
         e(m,0) = m*(N+Ng)*SFO
   where N: FFT size(=64); Ng: guard size (=16) ; SFO=(T'-T)/T 
 (T is sampling period at the output of IFFT, T' is sampling period at   
receiver)

How can I join e(m,0) and (1),(2)? (assume perfect knowledge SFO).


Any help is greatly appreaciated.

Regards,
NQH



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