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Re: OFDM Pilot Detection

Reply posted 2 weeks ago (11/13/2020)
Sounds promising! Do you have any references like journals, technical report or thesis for this algorithm?

Re: OFDM Pilot Detection

Reply posted 2 weeks ago (11/13/2020)
Well, even though I will start working with few common IEEE standards, I want to eventually implement practical algorithms for generic pilot location detection/estimation...

OFDM Pilot Detection

New thread started 1 month ago
I have captured OFDM I-Q data at IF. I have down-converted to it to baseband and then simply performed autocorrleation. Based on autocorrelation-based techniques...

Re: Autocorrelation of OFDM Signal

Reply posted 5 months ago (06/20/2020)
Is this true for other standard as well, like dvbt-t and wimax? the signal i was dealing with is not wi-fi,  but other ieee standard like dvb-t and wimax.

Re: Autocorrelation of OFDM Signal

Reply posted 5 months ago (06/18/2020)
Thanks for your feedback. This is hugely helpful. You have mentioned about OFDM symbol repeating indefinitely as this leads to cheap implementations in hardware...

Re: Autocorrelation of OFDM Signal

Reply posted 6 months ago (06/15/2020)
[cp & symbol] aligns with [cp & symbol] at 0 lag where we an see a huge peak. The other peak is where cp aligns with symbol end. That's where we are going...

Re: Autocorrelation of OFDM Signal

Reply posted 6 months ago (06/15/2020)
Here is the output of autocorr:| ||                                  |              ||_____________|____|_____________|_|_ |_________|_|_|_... 0 ...

Re: Autocorrelation of OFDM Signal

Reply posted 6 months ago (06/15/2020)
well, built-in correlation function with same signal can perform auto-correlation, right? Like xcorr(x,x)

Re: Autocorrelation of OFDM Signal

Reply posted 6 months ago (06/15/2020)
The noisy received signal (rx) is completely unknown. The whole objective is to auto-correlate to "estimate" the OFDM useful symbol time (Tu). It is producing...

Re: Autocorrelation of OFDM Signal

Reply posted 6 months ago (06/15/2020)
You take time sample and use python or matlab built-in function to perform autocorrelation. It's autocorrelation, so it was correlated with itself.

Autocorrelation of OFDM Signal

New thread started 6 months ago
Hello all,I have captured OFDM I-Q data at IF. I have down-converted to it to base-band and then simply performed autocorrleation. I was trying to find a clear...

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