Tjaart van der Walt writes:
> GPS uses 1023 bit Gold codes. What are the differences between Barker
> and Gold codes?

I don't know! But I don't think Gold codes would be used in the same
way that a spreading (Barker) code is used as I described before. If
you spread a digital signal with an N-bit spreading code then the
bandwidth of the signal becomes N times what it was. 1023-bit
spreading codes would be too excessive for consumer
communications. More likely, although I really don't know for sure, it
is something to do with encoding for error correction.

Dmitry Kiryashov writes:
> Why not possible to transmitte and receive Barker's sequency at one time
> ?

Because the Barker code repeats itself, it is only pseudorandom, not
truly random.

Mal Goris
--
http://www.nfra.nl/~mgoris/