LTE PRACH DETECTION IN MATLAB

Hi guys,

I am trying to understand the prach detection code from the lte toolbox.

I am unable to crack the meaning of this.

% The following parameter specifies the fraction of the timing window at

% the end of the timing window for one preamble that will be considered

% as belonging to the next preamble and having a timing offset of zero.

% This effectively excludes timing offsets of above (1.0-deadzone) of the

% maximum and ensures detection of preambles with low timing offset where

% noise has caused the peak of the correlation to be slightly into the

% previous preamble's timing window. The value configured below corresponds

% to the duration of the main lobe of the autocorrelation of the PRACH.

% (zero is used for the case that NCS=0 as there is only one preamble

% per correlation.)

if (zcz~=0)

deadzone=info.SamplingRate/(info.NZC*info.SubcarrierSpacing)/zcz;

else

deadzone=0;

end

Could someone help or suggest me a good source that can explain this.

As of now, i am following lte: from theory to practice textbook in which i could not find about this

Any help is appreciated

[giancarlo maldonado cardenas]

Hi Sriharsha Korada, I'm working on this too, and I finally understood what this part of the toolbox code means. you can contact me to be able to explain you better.