Hi, I am trying to understand the autocorrelation function for better timing resolution. I am bit confused how to find out the auto correlation PEAK from the output of M-Sequence? and What is the impact of distance between the two peaks? In other words, the impact of the length of the M-Sequence? Thanks,

# Autocorrelation

Started by ●November 17, 2008

Reply by ●November 18, 20082008-11-18

For M-sequences the autocorrelation should have a peak after every 2^M-1 symbols. "How to find auto-correlation"?? I don't get the question. Autocorrelation is always defined as.. r(tau) = Sum_t { x(t) x(t+tau)}. The impact of distance between two peaks is the ambiguity resolution. We know the exact timing of the signal excepting the ambiguity of 2^M-1. In practical systems we make M big enough that we don't see the other peak. Regards Piyush On Nov 17, 9:01�pm, "angelredrose" <el...@leeds.ac.uk> wrote:> Hi, > I am trying to understand the autocorrelation function for better timing > resolution. I am bit confused how to find out the auto correlation PEAK > from the output of M-Sequence? and What is the impact of distance between > the two peaks? In other words, the impact of the length of the M-Sequence? > > Thanks,