homebrew hardware and WiFi

[adrian cockcroft]

You can already get  the Telit GM862-GPS GSM Modem w/ GPS, along with
the Bluetooth/WiFi module, thats four networks in two packages, with
open specs and existing project plans for Linux. the fun part is going
to be figuring out how to lay out four antennas in a small package.

The OpenCell project
http://www.widgetry.org/dokuwiki/doku.php?id=parts_lists is
trailblazing this particular combination.

And of course, anything the homebrew designs work out is openly
documented so could be evaluated by the OpenMoko team for future
designs that might actually fit in your pocket....

Adrian

On 2/18/07, Ian Stirling <openmoko at mauve.plus.com> wrote:
> Wolfgang S. Rupprecht wrote:
> > One other hope I have is that the RF chip designers will start making
> > more flexible radios.  Does a GSM/wifi/bluetooth/GPS phone really need
> > 4 different RF chips and associated antennas and cabling?  Using
> > software-radio techniques it might be possible to combine some of the
> > hardware.
>
> Basically - perhaps at some time in the distant future.
> For the moment, basically no.
> There are a large number of reasons why not - firstly, 1GHz A/D
> converter chips are both large, power-hungry, and expensive.
> Secondly, processing the output from them is hard.
> Thirdly, the dynamic range and intermodulation between different radio
> frequencies mean that it's even harder.
>
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