Hi Huzaifa, I increased the sampling rate, but the problem is still there. Can you give me some details on what you have done to solve this problem?
Thanks! Jamie On Thu, Apr 26, 2012 at 12:05 AM, Huzaifa Zafar <[email protected]>wrote: > Try increasing the sampling rate (to 1M). We were doing something similar, > and in our case, it helped. > > On Wed, Apr 25, 2012 at 1:41 PM, Jamie Wo <[email protected]>wrote: > >> Hi all, >> >> I am currently working on tranmiting and receiving data using 2 >> USRPN210s. I got some ideas from here and did this task using GMSK in GRC. >> >> The transmit side: File source --> Packet encoder --> GMSK Mod --> UHD >> sink. >> The receiver side: UHD source --> GMSK Demod --> Packet decoder --> File >> sink. >> >> Data in file source can be received by the receiver. However, I am not >> sure whether the data has been received correctly. Does anyone know how to >> test it ? >> >> My method is to use wav source and audio sink like this: >> >> The transmit side: Wav source --> Packet encoder --> GMSK Mod --> UHD >> sink. >> The receiver side: UHD source --> GMSK Demod --> Packet decoder --> Audio >> sink. (samp_rate 48K). >> >> I think if the sound received on the receiver is the same as the wav >> file, the data may be correctly received. However, after I tried this, the >> sound received was disjointedly, not as smooth as the wav source, and >> "audio underrun" happened sometimes. >> >> However, when I put all the blocks in one flow graph without UHD like >> this: >> wav source --> Packet encoder --> GMSK Mod --> GMSK Demod --> packet >> decoder --> audio sink.(samp_rate 48K), it works very well. >> >> Does anyone meet the same problem or know how to solve it? Is my way to >> test how to receive correctly right? >> >> To do what I want, is there any other blocks that need to be added in the >> GRC? >> >> Please give me some guidance. >> >> Thanks in advance. >> >> Jamie >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > -- > Huzaifa Zafar >
_______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
