Maybe this one:
http://www.arrl.org/news/surfin-iphone-gets-software-defined-radio
There are quite a few apps that deal with encoding/decoding on Android too,
but most just use the audio interface to pass signals, relying on an
external common radio, instead of relying on an SDR.
--------------8<--------------8<-------------
*Ronan Paixão*
2011/12/8 James Hall <hall.jam...@gmail.com>
> I think I have heard of an SDR program for iphones. I don't know as I have
> an Android phone myself.
>
>
> 2011/12/8 Ronan Paixão <ro...@dapaixao.com.br>
>
>> Maybe we can make an accessory for Android phones. That way we would
>> already have a nice touch UI that could control the fastest parts on an
>> external DSP or FPGA. With today's dual core cellphones with embedded DSP
>> and SIMD instructions, and rumors about quad-core ones, there may even be
>> enough horsepower to do some intensive stuff on the phone itself. With
>> phones now able to do USB OTG, there may be enough bandwidth to do some
>> fancy stuff too.
>>
>> --------------8<--------------8<-------------
>> *Ronan Paixão*
>>
>>
>>
>> 2011/12/8 Frank A. Stevenson <fr...@hvitehus.no>
>>
>> As far as best practices go writing HW independent code should be
>>> desirable. I have a USRP1, and it would be nice to be able to write code
>>> that simulates the radio on a PC with the USRP1/2 as the radio backend.
>>> PC
>>> simulation is in my mind key to rapid development of embedded software.
>>> One problem with this approach is that DSP algorithms may have to be
>>> tailored to specific I/Q sample rates. On a PC simulation we can adjust
>>> decimation rates and do rational resampling if needed. But for code
>>> running on physical hardware we may need to know ahead of time the I/Q
>>> sample rates that the HW is capable of working with, and write code
>>> accordingly.
>>>
>>> - my 2 cents
>>>
>>> Frank
>>>
>>> > schrieb Frank A. Stevenson on 2011-12-07 10:02:
>>> >> On Tue, 2011-12-06 at 15:23 -0800, Bruce Perens wrote:
>>> >> [SNIP]
>>> >>> The plan is to produce a mobile first, because we know we can fit
>>> >>> everything in the form factor today. The radio design presently
>>> looks a
>>> >>> lot like USRP with a multi-band receiver front-end and transmitter, a
>>> >>> speaker amplifier and microphone preamp, a Linux system as the
>>> built-in
>>> >>> "host" and application platform, and a touch-screen as the user
>>> >>> interface.
>>> >>
>>> >> I would like to caution against going for a touch screen user
>>> interface.
>>> >> I have worked on such writing touch GUI framework code for years, and
>>> >> the complexity of making a good touch UI should not be underestimated.
>>> >> The work involved will also detract significantly from the development
>>> >> effort needed for just a working SDR radio.
>>> >
>>> > IIUC Bruce described some embedded computer running some quite-standard
>>> > OS, which happens to be RF-enabled and power efficient enough for
>>> > handheld operation. I bet it would have an USB Port, maybe USB OTG or
>>> > flexibe host/device ports, or dedicated host/device ports. I'd just
>>> plug
>>> > in my keyboard and/or mouse and use that if the keypad is not enough.
>>> >
>>> > Regards
>>> >
>>> > Patrick
>>> > --
>>> > Engineers motto: cheap, good, fast: choose any two
>>> > Patrick Strasser <patrick dot strasser at tugraz dot at>
>>> > Student of Telematik, Techn. University Graz, Austria
>>> >
>>> >
>>> >
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