Re: [Discuss-gnuradio] Microwave Link Demodulation

Hi Ihab,

1) Frequency range: 1.5 - 38 GHz

since the B205 mini only goes up to 6 GHz, you're bound to use an external mixer. The device you chose for that will completely depend on your specific application's needs. Also note that finding something that works as well at 1.5 GHz as it does on 38 GHz is probably pretty expensive, so and finding antennas that work across that range isn't trivial, either. So I'd recommend that, at least for a first prototype, you restrict yourself to a smaller frequency range. If you stay below 6GHz, the B205 can do that on its own

2) Bandwidth range : 2 - 56 MHz

The B205 mini can definitely dot 56 MHz of bandwidth; the question is whether your PC can process them fast enough and whether your USB3 controller can sustain these rates.

3) Modulation : Qpsk - 256 QAM

Well, that's just a question of software that you'll write :)

4) Data rate range : 150Mbit/s - 326Mbit/s.

That sounds doable, considering the only limit here is Shannon's channel capacity and your ability to write good software including synchronizers, equalizers, channel codes etc.

5) Error correction method : i thinks it is FEC.

Most definitely you'd want some channel coding.

Best regards,
Marcus

On 23.08.2016 15:34, Ihab Zine wrote:

Hi Ron,

1) Frequency range: 1.5 - 38 GHz

2) Bandwidth range : 2 - 56 MHz

3) Modulation : Qpsk - 256 QAM

4) Data rate range : 150Mbit/s - 326Mbit/s.

5) Error correction method : i thinks it is FEC.

Ihab 

On 22 August 2016 at 12:33, Ihab Zine <ihab.zine13@gmail.com> wrote:

Hi All, 

I'm working on a project using GnuRadio And USRP 205 mini, i'm at the stage where i need to demodulate a microwave link signal. 

Anyone has an experience with Microwave link or tried to do something similar? Is it possiable to do it in gnuradio? or is there another approaches to do it? 

I'd appreciate any information you could give me.

Thanks 

Ihab 

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