Home Brew StarTrek Communicator
Dean at cognation.net
Sun Jun 17 17:03:04 CEST 2007
Just a reminder about the www.yi-tan.com regarding this and other 3g/4g
phone issues tomorrow Monday 1.30pm USA est. (even thought the webpage
hasn't been updated to reflect this weeks topic yet)
Will also be interesting to hear thoughts on network neutrality as per
the fallout with T-Mobile and Truphone this week.
Cognation Pty Ltd
dean at cognation.net
+61-2-9016-5642 (Sydney in-dial).
> -----Original Message-----
> From: community-bounces at lists.openmoko.org [mailto:community-
> bounces at lists.openmoko.org] On Behalf Of Ian Stirling
> Sent: Sunday, 17 June 2007 10:39 AM
> To: Emre Turkay
> Cc: OpenMoko
> Subject: Re: Home Brew StarTrek Communicator
> Emre Turkay wrote:
> > On 6/12/07, Ian Stirling <OpenMoko at mauve.plus.com> wrote:
> >> Using really good coding, in good channel conditions, you may get
> >> megabytes a second.
> > Actually 10 MBits/sec = 1.25 MBytes/sec
> However, in good channel conditions, you can squeeze extra bits into
> each signal period.
> For example, '56K' modems put 7 bits into each signal period.
> Common wifi implementations rarely use only one bit per signal period.
> As the channel noise rises, the number of bits you can fit in to the
> signal period drops.
> As an extreme case, for example, GPS has a 50 bits/second datarate,
> a signal rate of 1Mhz.
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