February 18, 2017 12:38 pm
84 is viewed
DVB-T protocol is great for transmition of digital video. In GnuRadio we have gr-dvbt , you can install it easily in gnuradio. I reforemed TX and RX demo for using in HackRF One a open source hardware in SDR. For TX and RX i used HackRF One.When i runned TX and RX i had below errors:
DVBT project receiver probelm OOrestart aquisition d_freq_offset: -5 Od_freq_offset: -5
In below link is discussed that low cpu processing can cause this problem…….
Finally My problem is solving with this rules:
Any PC or laptop Processor that you run gnuradio on it,has a budget processing bandwidth for hakrf one.I used a debian os on vmware a oneside corei5 processor host windows on HP probook 4530s and the other side i used a debian linux laptop Sony vio SR with pentium dual core in live mode.
for bandwidth 6 8 10 i had nothing execpt top errors.So i found that link that describe for high bandwidth and SPS we need power full processing unit.
Finally i reduce bandwidth of DVBT in OSmocom now it can work like charm with bandwidth 1M. I hope this post is useful for amateur radio.
best regards stackprogramer