wimax chain

2019-11-20 Thread Eitan Hetzroni
Hi, any solution to the reception (rx) or tx of wimax using gnuradio? could not find any proper chain that finds the preamble. -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, r

Re: wimax chain

2019-11-20 Thread CEL
Hi Eitan, it's been a while since I've looked into IEEE802.16, but that's a very regular OFDM system, isn't it, with a fixed OFDM symbol as short preamble (for the downlink bursts), and a 2-symbol preamble for the start of frame? A simple correlation detector might do in that case; a bit nicer on

Re: wimax chain

2019-11-20 Thread CEL
Hi Eitan, please keep replies on the list! I don't think there's a readymade solution for you. I'm not quite sure what you mean with "resemble OFDM": could you elaborate? I really thought that IEEE802.16 is a pure OFDM system, so this comes as a surprise. In which way is it not? Best regards, M

Re: wimax chain

2019-11-20 Thread Eitan Hetzroni
hello, it is an ofdm system, but i could not get to tweak the ofdm_Rx example to find the preamble in the transmission i was looking to capture. On Wed, Nov 20, 2019 at 3:16 PM Müller, Marcus (CEL) wrote: > Hi Eitan, > > please keep replies on the list! > I don't think there's a readymade soluti

Re: wimax chain

2019-11-20 Thread CEL
Hi, ah! OK, yeah, that's unfortunate. So, the easy thing about OFDM: as soon as you know where your symbol starts, all you need to do is apply an FFT – and you're done. (you will still have to "equalize" your reception, but that is a point-wise multiplication at the output of the FFT.) So, if I

RE: Gnuradio for Raspberry PI 4 and SDRPLay works well, but need documentation

2019-11-20 Thread Getz, Robin
Glen: >The spectra from the PlutoSDR look good, and I can use a wide range of >bandwidths, Great. >but for bandwidths larger than 3.2 MHz I don’t get all the data captured (I >know this by calculating how >long I should have to wait for all N samples at a given data rate, and measure >the ac