Hi John,
On Mon, Sep 05, 2011 at 05:20:17PM +0800, John Wu wrote:
> We are just planning on this project which use usb based sdr board and
> will be open design and source.
In that case, what do you plan to use as layer1? A simple SDR board
only implements "Layer 0", but what about layer1?
osmo-bts and openbsc implement layers >= 2.
So what is your plan for L1 ?
> sounds like sysmocom already working on this.
sysmocom is not building a USB based SDR, but a complete embedded BTS
product (picocell). That's quite something different.
And while osmo-bts and openbsc are free software available in source
code, the sysmoBTS L0 (hardware) and L1 (FPGA+DSP image) are not.
So by all means, don't be discouraged from building more hardware that
interoperates with GSM related Free and Open Source software!
Regards,
Harald
--
- Harald Welte <[email protected]> http://laforge.gnumonks.org/
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