Re: [Openbts-discuss] Noob Question about multiple ARFCN

[Tom T. <to...@ts...>]

On Mon, Feb 23, 2015 at 11:39 AM, Arthur Rabaté <art...@gm...> wrote:
> To my understanding this code does not work with the bus versions of usrp
> (like b200/b210) because they do not have the sampling rate.

When the code was written, the B200/B210 didn't exist and there no
devices with fully software configurable clocking.

For a 10 channel system, the code used the following receive path rate
conversion values from FPGA to GSM decoder. The transmit side is
simply reversed.

100 Msps - ADC rate

4.1666 Msps - Host receive rate (24:1)

4.0 Msps - Outer resampler (25:24)

10 * 400 ksps - Polyphase channelizer (10:1)

10 * 270.833 ksps or 541.666 ksps - Inner resampler (96:65 or 96:130)

> By PA you mean power amp I presume ? Well I am not using any right now but
> when I will need one I will get back to you.

Yes, by PA I was referring to power amplifier.

  -TT