Hi, I never used Gnuradio packets transmission blocks and even don't know how the digital benchmark_?X.py work. But, today when I was explaining GNURadio for some friends, I noticed that some digital modulations (for example GMSK) reception can be improved by using a scrambling engine which is something I used before many years ago to improve data reception circuitry performance.
The problem is raised when the digital source is producing a long sequence of 0's or 1's. This will make the regeneration process more difficult at the receiver. To solve this problem, I used 8 bit shift register with its input derived from XOR which is fed from the source digital input and from a second XOR. The second XOR takes its input from the 4th and 8th shift register bits. Implementing this circuit as a GR block is easy and helpful. Best regards, Firas -- View this message in context: http://www.nabble.com/Suggestion-to-Improve-Some-Digital-Modulations-Reception-tp24375263p24375263.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
