|Subject:||Re: [Discuss-gnuradio] Low TX Power when performing frequency hopping|
|Date:||Mon, 02 Mar 2015 12:39:56 +0100|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0|
tuning is an issue, here. The problem is not that you're only retuning the LO, the whole signal chain has to be correctly locked in again after each tune.
If the total bandwidth you're spanning is less than 40MHz, which is the baseband bandwidth of the daughterboard's you're using, try setting your LO frequency to the center of that band, and hop via frequency shifting in the FPGA only. To do that, you'll need to use tune_request_t objects rather than simple using the target frequency when tuning using set_tx_freq in your USRP sink.
Further things of interest: How do you measure the power of a 6ms burst? How wide is your signal?
On 03/02/2015 12:24 PM, vaibhav kulkarni wrote:
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