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hey thank you for your reply one confusion as when we do cross correlation i need a fixed input too with which correlation will be done of the coefficients i read papers and it suggests as OFDM is my application i will get that input from there is it?
and i m willing to design a multiplierless correlator using shift and add how could that be done. i am planning on designing a correlator using binary bits which gives better performance and computation and uses less area. so i am planning to do it by correlating two binary inputs and getting the putput using shift and add do you have any idea how should i proceed with it
and yes with your idea what should be my other input for correlation .i am quite new to this
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Your input is the OFDM received signal (you are designing part of a working receiver hopefully). Your coeffs are those you have given and are I assume standard for your preamble. From where did you get those nice coeffs, I don't know about them and why are they zeros and ones only.
You can add directly in parallel (leads to very wide adder so requires pipelining) or use shift_add (transposed structure). There ia plent around about either structure.
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