I am trying to feed 802.16e pattern to E4438c and import it to the E4400A and 89600. But however, the VSA seems didn't catch my waveform at all. So, I check the infos shown on the 89600, and find out the value of "Sync correlation" is almost zero.

So, could anyone tell me how 89600 synchronized with WiMAX pattern at the beginning ?

Thanks a lot,

So, could anyone tell me how 89600 synchronized with WiMAX pattern at the beginning ?

Thanks a lot,

This is from the help file text...

Downlink

Sync Corr (Sync Correlation) is the correlation coefficient between the measured preamble and an ideal preamble. This can be used as an indication of the quality of the preamble. A value of 1 indicates perfect correlation and a value of 0 indicates no correlation.

Uplink:

Sync Corr (Sync Correlation) is the normalized autocorrelation peak of the signal. This can be used as an indication of the quality of the basic OFDM symbol format. A value of 1 indicates perfect correlation and a value of 0 indicates no correlation. A low correlation value could be due to mismatched parameters between the signal and the 89601 setup, such as BW, BWRatio, or FFTSize. The problem could also be due to signal creation problems like an incorrect windowing implementation.

Regards -