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JKos · 03-12-2008, 11:33 AM

The data is not transmitted as discrete pulses. It is a modulated carrier. The carrier is only on when a packet of data is being sent. The carrier has constant power while on (typically). Each bit of the DSSS spreading code is called a chip. The signal is modulated by the chips XOR'd (typically) with the data.

So, the chain of events kinda looks like this... Data -> Encryption (if applicable) -> Error correction coding -> XOR with spreading code -> Modulate carrier.

- John

03-12-2008, 11:33 AM	#110
JKos Flyin' Around Join Date: Mar 2008 Posts: 11	Re: Kiwi's XPS test results are up. The data is not transmitted as discrete pulses. It is a modulated carrier. The carrier is only on when a packet of data is being sent. The carrier has constant power while on (typically). Each bit of the DSSS spreading code is called a chip. The signal is modulated by the chips XOR'd (typically) with the data. So, the chain of events kinda looks like this... Data -> Encryption (if applicable) -> Error correction coding -> XOR with spreading code -> Modulate carrier. - John