I'm a bit confused. What exactly are you trying to do?
On Thu, Jun 23, 2011 at 9:17 AM, Songsong Gee gee.songs...@gmail.comwrote:
Continueing with http://www.ruby-forum.com/topic/1983866,
I have planned to append a preamble before an actual signal and turn RX on
earlier than TX.
Then RX
On Fri, 2011-06-24 at 01:17 +0900, Songsong Gee wrote:
Continueing with http://www.ruby-forum.com/topic/1983866,
I have planned to append a preamble before an actual signal and turn
RX on earlier than TX.
Then RX will receive a signal like below:
|---RX turn on--|---TX
On 23/06/2011 2:31 PM, Nick Foster wrote:
Why would you set the amplitude of the preamble differently than the
actual data?
--n
In the hopelessly-naive assumption that the preamble can be made to be
perfect through brute-force transmit power.
Like you observed earlier, correlation is the
Ok. First of all, I'd like to run a code like below (pseudo):
for i = 1 to 200 // preamble duration
amp = 32767
end for
amp = 100
Next, how many baseband samples are generated by DPSK or Frequency mod block
for a single symbol input
Composed with Android (Galaxys)
2011. 6. 24. 오전 3:31에 Nick
Or operate your receiver at absolute zero so there is no thermal noise? :D
On a more serious note, how I do preamble detection is the following:
* Figure out the sample sequence of your TX'ed preamble sequence, use this
as a match filter.
* Tag the magnitude of the match filter and run through
On Fri, 2011-06-24 at 04:00 +0900, Songsong Gee wrote:
Ok. First of all, I'd like to run a code like below (pseudo):
for i = 1 to 200 // preamble duration
amp = 32767
end for
amp = 100
Like I said earlier, this is unlikely to be a good approach to
synchronizing with a preamble.
Next,
On 23/06/2011 3:03 PM, Colby Boyer wrote:
Or operate your receiver at absolute zero so there is no thermal noise? :D
Infinite SNR. Must have :-)
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Continueing with http://www.ruby-forum.com/topic/1983866,
I have planned to append a preamble before an actual signal and turn RX on
earlier than TX.
Then RX will receive a signal like below:
|---RX turn on--|---TX turn on-
(---trash
