Design of Cognitive Radio Front-End

[Ahmed Ragheb]

Hi,

What is the performance parameters of LNA, Mixer (Up-conversion and Down-conversion), and PA for cognitive radio transceives?

Regards,
Ahmed

 

[ldynasa]

Hi, I've been looking into software defined radio(SDR) recently which I believe is something quite close to cognitive radio in terms of hardware requirements. For the receiver side, usually people can do 4 to 5 db dsb noise figure, but the biggest challenge is the linearity where out band interference significantly impacts your performance. You can check H. Darabi's recent paper

 

[Ahmed Ragheb]

Hello ldynasa,

i have questions :
1) Does the value noise figure range for overall transceiver or one building block of front-end??
2) What about the range of other parameters like gain, power consumption, and linearity???
3) any references please.

thanks for your help and support.

Best regards,
Ahmed

 

[ldynasa]

I'm talking about the entire receiver's noise figure. Other parameters are pretty close to conventional RF-front ends, you can check out this one: "a 40nm CMOS 0.4-6GHz Receiver Resilient to out-of-band blockers" by Jan Craninckx.

 

[kokabanga]

hxxp://www1.ee.ucla.edu/~brweb/papers/Journals/BRAug10.pdf