Re: [Discuss-gnuradio] Some new 802.15.4 stuff

[Bastian Bloessl]

Hi Dingwen,

On 04/19/2013 05:16 PM, Dingwen Yuan wrote:
> I played a bit with your examples. The tx all works perfect. But for rx,
> sometimes I get the "hello gnuradio" messages, sometimes not. What
> daughterboard are you using, I use the RFX2400.

Cool, that it compiles and at least does *something* :)

I use a XCVR2450 with an N210. Up until now I did not do any real 
performance measurements, but with the PCAP output it sould be easy to 
quantify your losses. You can just open the PCAP file, with Wireshark 
for example, and immediately see how many packets you received. Note 
that currently all packets are written to PCAP (i.e. CRC is not checked).

If you think its a bug in the code and let's say the packet format is 
wrong and thus every n-th packet is wrongly encoded, then you can check 
it with the loopback flow graph.

Some other stuff you could try:
- more gain
- less gain :)
- other channel (if you have a lot of WiFi traffic there)
- are your USRPs close to each other? Try moving them some meters apart 
from each other.

Just out of curiosity, did you try the transceiver? Is it working for you?

Hope it helps,
Bastian