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Spreading gain concept

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naserco

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Hi,

I have a question regarding spreading gain. I understand that the SG=10log(SF). So for example, if SF=16, then spreading gain = 12 dB.

But sue that depends on the chosen codes. So is there a specific technique to measure the orthogonality of the codes, to know if they are eligible for the full Spreading gain or am I just thinking nonsense :thinker:
Thanks
 

You measure the orthogonality of codes using the cross correlation metric. It's usually small but not zero. The spreading factor depends on the chip rate of the spreading codes not on the orthogonality between them.
 

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