Re:Re: [Discuss-gnuradio] usrp mimo question

2010-06-02 Thread weizhongshan
thanks mattso 2 usrps and 4 rfx dbs is enough for me ,and in usrp multi-signals can be simultaneous.while when i send a 50K frequency signal ,and receive it from two antennas ,through oscope i find the two IQ signals are not synchronous,signal from the second antenna seems 1/4 wavelength ahead

Re: [Discuss-gnuradio] usrp mimo question

2010-06-02 Thread Matt Ettus
On 06/01/2010 03:18 AM, weizhongshan wrote: sos! i want to realize a 2*2 mimo simplex communication system .since rfx daughterboards can transmit/receive 2 complex IO signals, i thought 2 usrp and 4 rfx_daughterboards is enough for me .but now i am wonfering whether usrp can transmit/receive mult

[Discuss-gnuradio] usrp mimo question

2010-06-01 Thread weizhongshan
sos! i want to realize a 2*2 mimo simplex communication system .since rfx daughterboards can transmit/receive 2 complex IO signals, i thought 2 usrp and 4 rfx_daughterboards is enough for me .but now i am wonfering whether usrp can transmit/receive multiple signals simultaneously.could somebody