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John Wu jwjohn0 at gmail.comHi Harald, yeah, the hardware is layer0, then I will also implement L1 code in PC side. I have download osmo-bts source but I dont very understand the source architecture. can you introduce the architecture or if there is a design document. I need to know where should I implement my L1 code. and the interface with higher layer. On Mon, Sep 5, 2011 at 7:19 PM, Harald Welte <laforge at gnumonks.org> wrote: > 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 <laforge at gnumonks.org> > http://laforge.gnumonks.org/ > > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. A6) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20110916/46e03445/attachment.htm>