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design | Digital wireless systems

There are 42 messages in this thread.

You are currently looking at messages 0 to 10.

Digital wireless systems - john - 2008-05-12 11:31:00

Hi,

I programmed Spartan chip to produce serial data ( main_Clock, Data
Clock, Data and Tag ) stream for a DAC. I need to make this system
work with out wires. The main clock is 3MHz, Data clock is 1.5MHz. Can
anybody advice me how to make it digital wireless ( Transmitter plus
receiver). I have not done anything like this before. The DAC will be
at 6 feet away from the Spartan chip.

Thanks
John



Re: Digital wireless systems - linnix - 2008-05-12 14:50:00

On May 12, 8:31 am, john <conphil...@hotmail.com> wrote:
> Hi,
>
> I programmed Spartan chip to produce serial data ( main_Clock, Data
> Clock, Data and Tag ) stream for a DAC. I need to make this system
> work with out wires. The main clock is 3MHz, Data clock is 1.5MHz. Can
> anybody advice me how to make it digital wireless ( Transmitter plus
> receiver). I have not done anything like this before. The DAC will be
> at 6 feet away from the Spartan chip.
>
> Thanks
> John

The best way is to modulate your signal at 5.8GHz and embed the phase
correction data into the data stream.   I assume the data flow is one-
way only.

Re: Digital wireless systems - john - 2008-05-12 14:56:00

Hi,

Yes, The data is flowing in one way. Would you please suggest some
hardware. I am also thinking about bluetooth. Please advice!

Regards,
John

Re: Digital wireless systems - linnix - 2008-05-12 14:58:00

On May 12, 11:56 am, john <conphil...@hotmail.com> wrote:
> Hi,
>
> Yes, The data is flowing in one way. Would you please suggest some
> hardware. I am also thinking about bluetooth. Please advice!
>
> Regards,
> John

Bluetooth will not give you 1.5MHz data rate.  In fact, 5.8GHz might
not be enough, but the next ISM band is 25GHz.

Re: Digital wireless systems - john - 2008-05-12 15:17:00

Any suggestions regarding Hardware?
Regards,
John

Re: Digital wireless systems - linnix - 2008-05-12 15:41:00

On May 12, 12:17 pm, john <conphil...@hotmail.com> wrote:
> Any suggestions regarding Hardware?
> Regards,
> John

The Atmel ATR2820 RF Transceiver would be a good start, but I can't
design your apps without knowing the full spec.

Re: Digital wireless systems - Rich Webb - 2008-05-12 15:49:00

On Mon, 12 May 2008 08:31:59 -0700 (PDT), john
<c...@hotmail.com> wrote:

>Hi,
>
>I programmed Spartan chip to produce serial data ( main_Clock, Data
>Clock, Data and Tag ) stream for a DAC. I need to make this system
>work with out wires. The main clock is 3MHz, Data clock is 1.5MHz. Can
>anybody advice me how to make it digital wireless ( Transmitter plus
>receiver). I have not done anything like this before. The DAC will be
>at 6 feet away from the Spartan chip.

One-off project or a few dozen or a few hundred thousand? Per week?

A hobby/learning/grow-your-brain project or for sale (and use) by a
third party?

Will UL/CSA/EC/FCC/etc. certification be required?

Are the consequences of a communications failure: none, benign, pretty
bad, or someone dies?

Is this for a medical application (noting that your IP block is from
Wayne State University Medical Center)?

With that out of the way, if you can grind down the data rate a bit
(no pun intended), you're close to being able to use an off-the-shelf
solution like an XBee module, advertised to top out at 1 Mbps.

<http://www.sparkfun.com/commerce/product_info.php?products_id=8695>;

-- 
Rich Webb     Norfolk, VA

Re: Digital wireless systems - linnix - 2008-05-12 15:58:00

On May 12, 12:49 pm, Rich Webb <bbew...@mapson.nozirev.ten> wrote:
> On Mon, 12 May 2008 08:31:59 -0700 (PDT), john
>
> <conphil...@hotmail.com> wrote:
> >Hi,
>
> >I programmed Spartan chip to produce serial data ( main_Clock, Data
> >Clock, Data and Tag ) stream for a DAC. I need to make this system
> >work with out wires. The main clock is 3MHz, Data clock is 1.5MHz. Can
> >anybody advice me how to make it digital wireless ( Transmitter plus
> >receiver). I have not done anything like this before. The DAC will be
> >at 6 feet away from the Spartan chip.
>
> One-off project or a few dozen or a few hundred thousand? Per week?
>
> A hobby/learning/grow-your-brain project or for sale (and use) by a
> third party?
>
> Will UL/CSA/EC/FCC/etc. certification be required?
>
> Are the consequences of a communications failure: none, benign, pretty
> bad, or someone dies?
>
> Is this for a medical application (noting that your IP block is from
> Wayne State University Medical Center)?
>
> With that out of the way, if you can grind down the data rate a bit
> (no pun intended), you're close to being able to use an off-the-shelf
> solution like an XBee module, advertised to top out at 1 Mbps.

Take a look at the RF data rate of 250Kbps.  Does it mean the same for
me as for you?

>
> <http://www.sparkfun.com/commerce/product_info.php?products_id=8695>;
>
> --
> Rich Webb     Norfolk, VA


Re: Digital wireless systems - john - 2008-05-12 15:58:00

Hi,

What do you think about Texas Instrument's IEEE 802.16 (WiMax) chip
set ( TRF1X/2X RF Chipset ).
 Please advice!

Regards,
John


Re: Digital wireless systems - linnix - 2008-05-12 16:04:00

On May 12, 12:58 pm, john <conphil...@hotmail.com> wrote:
> Hi,
>
> What do you think about Texas Instrument's IEEE 802.16 (WiMax) chip

No.

> set ( TRF1X/2X RF Chipset ).

Maybe.

>  Please advice!

Forget about Bluetooth, WiFi, XYZBee, WiAnything.  If you want
slicings or channelings, you need 25GHz.  To get 1.5MHz data rate, you
need the full bandwidth for 5.8GHz.



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