Forum Post: RE: CC1101 WOR mode problem

Hello TI experts,

I have evaluated best sync word used in CC1101 and still I could not figure out exact methodology used by TI in order to determine best sync word (0xD391)

My answer is totally different than TI's value. This is my evaluation criteria,

1. Eliminate words with at most 3 equal bits in a row.

2. Lowest auto correlation 

3. Total auto correlation energy

4. Hamming Distance With Preamble

5. Total Crosscorr Energy With Preamble

This is my result (figures are normalized to 1

parameter                                                                           my selection                      TI selection (0xd391)

Autocorr Bandwidth                                                          0.0667                                  0.0667
Total Autocorr Energy                                                       0.0524                                  0.0484
Hamming Distance With Preamble                              0.2500                                  0.3750
Total Crosscorr Energy With Preamble                        0.0927                                  0.0232

Average                                                                               0.1154                                  0.1283

My selection appeared to be better than TI selection. Anybody can explain whether I have missed any important aspect?

Thanking You,

Ushan