Help with altmult_accum

[Altera_Forum]

Hi everyone. 

 Just wondering how could the Altera Megacores altmult_accum help designing the time-domain correlator. It would be greatly appreciated if someone explain me the basic aspects of the design.  Thank you very much.  PS: my correlator design idea derived from this paper:  http://img134.imageshack.us/my.php?image=correlatorbasicrf2.jpg

[Altera_Forum]

View this.  

 https://www.alteraforum.com/forum/attachment.php?attachmentid=644

[Altera_Forum]

SOOOOO many thanks for your pic PARRADO. I've just got a completely new idea for my correlator, it will use much less the FPGA cores, however a bit slower.  

 I made a calculation: if I want to correlate 1000 samples from the ADC with 66 points reference signal, it would take (1000+66)*66 = 70356 clock cycles to complete the correlation. If a 40Mhz system clock is used, than the correlation frequency can get upto 40,000,000/70356 = 568 Hz. Is my calculation correct or not ? If it is, then 568 is fast enough.  Again, thanks a lot for your help, much appreciate.