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Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?
From: |
Alexander Chemeris |
Subject: |
Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not? |
Date: |
Sat, 28 May 2011 20:05:51 +0400 |
On Sat, May 28, 2011 at 19:59, Marcus D. Leech <address@hidden> wrote:
>> Real-time is not about performance, but about predictability ;) I have to
>> be sure that my flowgraph always executes before the deadline is hit. So
>> everything that introduces jitter is a no-no.
>
> In general, Gnu Radio executes on general-purpose OSes, which means that
> there will *always* be microsecond-to-milllisecond scale
> jitter in executing code. If you want 100s-of-nanosecond to microsecond
> scale execution timing predicability, Gnu Radio is going to
> be the least of your worries, in my experience. The kernel can prempt you
> at any time to deal with interrupts, etc.
You can do with sub-ms jitter on a decent Linux kernel. We performed a
tons of experiments with our VoIP media processing code (sipXmediaLib)
to make sure our processing is real-time.
--
Regards,
Alexander Chemeris.
Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?, Alexander Chemeris, 2011/05/28
Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?, Alexander Chemeris, 2011/05/28
Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?, Almohanad Fayez, 2011/05/29
Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?, Marcus D. Leech, 2011/05/29