Re: [Discuss-gnuradio] OFDM test with USRP

2015-03-19 Thread Martin Braun
On 19.03.2015 14:11, Henry Jin wrote: Hi Marcus, I later added a throttle and time scope to the tx end to see how large the amplitude can be. Indeed, when the multiplier is 60m, the amplitude increases beyond 1, which will be clipped by the USRP driver. Setting it to be 0.45 seems like a safe

Re: [Discuss-gnuradio] OFDM test with USRP

2015-03-19 Thread Henry Jin
Hi Martin, Thanks for the FOSDEM 14 video on youtube (although maybe not posted by you). Your talk is very informative and helpful. On Thursday, March 19, 2015, Martin Braun martin.br...@ettus.com wrote: On 19.03.2015 14:11, Henry Jin wrote: Hi Marcus, I later added a throttle and time

Re: [Discuss-gnuradio] OFDM test with USRP

2015-03-19 Thread Henry Jin
. Best, Henry Message: 20 Date: Thu, 19 Mar 2015 13:37:53 +0100 From: Marcus M?ller marcus.muel...@ettus.com To: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] OFDM test with USRP Message-ID: 550ac321.10

Re: [Discuss-gnuradio] OFDM test with USRP

2015-03-19 Thread Henry Jin
...@ettus.com To: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] OFDM test with USRP Message-ID: 550ac321.10...@ettus.com Content-Type: text/plain; charset=windows-1252 Hi Henry, I have built a tx and a rx grc flowchart for OFDM using USRP. I found the range of the amplitude of the input

[Discuss-gnuradio] OFDM test with USRP

2015-03-18 Thread Henry Jin
Hi everyone, I have built a tx and a rx grc flowchart for OFDM using USRP. I found the range of the amplitude of the input is fairly small in order to get it working (i.e., the USRP at the rx end can successfully decode the packets.) I wound if anyone can share some thoughts about this? I've