Re: wimax chain

[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) <address@hidden> wrote:

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,
Marcus

On Wed, 2019-11-20 at 15:13 +0200, Eitan Hetzroni wrote:
> thanks for the rapid reply,
> it does resemble ofdm, however as a beginner in the field i was hoping to find a readymade chain to tweak with?
>
>
> On Wed, Nov 20, 2019 at 3:11 PM Müller, Marcus (CEL) <address@hidden> wrote:
> > 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 the
> > acquisition speed per computational effort might be a fixed-length
> > correlator that detects the position of cyclic prefixes and could be
> > applied to a whole burst or even frame to get a good timing estimate
> > before you start decoding OFDM symbols.
> >
> > Best regards,
> > Marcus
> >
> > PS: Your email signature is kinda funny on a publicly archived mailing
> > list :D
> >
> >
> > On Wed, 2019-11-20 at 14:43 +0200, Eitan Hetzroni wrote:
> > > 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, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete all copies of the message.
>
> 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, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete all copies of the message.

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, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete all copies of the message.