How does 'information theory' to 'amplify' the GPS signal? t

[no_one]

I agree that the OP seems to have a difficult time with english grammar.
However the question is likely to do with the ability of a spread spectrum
signal (such as GPS) to be properly decoded in what appear to be
disastrously low C/N environments. This might be construed as
"amplification". I suggest he google CDMA and spread spectrum for more
insight.


<kmaryan@gmail.com> wrote in message
news:1118165387.551953.156560@f14g2000cwb.googlegroups.com...

In an attempt not to discourage you from future postings on
sci.electronics.design or other newsgroups, I offer the following tips:
- Don't post your question in the message title. It's rude and will
usually be ignored.
- Try to provide as much detail as possible in your question. Vague
questions get vague answers.
- Be sure to use the correct terminology in your question.
- Mind your grammar.

To answer your question: information theory has almost nothing to do
with amplifying a GPS signal. So I suspect you aren't using the
terminology you intended to use. I assume you meant one of the
following:
A: How does information theory apply to a GPS signal?
B: How do you amplify a GPS signal.
If your question is A, I can offer very little. Information theory
deals mainly with the limits and methods of communicating digital
information. As far as I know, GPS is a digital transmission that is
not especially limited by bandwidth or noise, accordingly, there is
probably relatively little that information theory has to say about a
GPS signal.

If your question is B, I offer the following information. Ask yourself
why you are amplifying it? Then find a suitable amplifier to get from a
1.5GHz GPS signal to whatever output you desire.

These are vague answers, but it was a vague question. Next time please
be more specific or else people may not be willing to help out.

Chris

 

[Scott Stephens]

Googling "eb/n0" I find:

http://www.sss-mag.com/ebn0.html

Scott

--
**********************************

DIY Piezo-Gyro, PCB Drill Bot & More Soon!
http://home.comcast.net/~scottxs/

POLITICS, n.
A strife of interests masquerading as a contest of principles.
The conduct of public affairs for private advantage. - Ambrose Bierce

There is no giant behind the devastation of the world—only a shriveled
creature with the wizened
face of a child who is out to blow up the kitchen because he cannot
steal his cookies and eat them, too. - Ayn Rand
**********************************

 

[martin griffith]

On 7 Jun 2005 10:29:47 -0700, in sci.electronics.design
"kmaryan@gmail.com" <kmaryan@gmail.com> wrote:

In an attempt not to discourage you from future postings on
sci.electronics.design or other newsgroups, I offer the following tips:

- Don't post your question in the message title. It's rude and will
usually be ignored.

huh?


martin

 

[Mac]

On Tue, 07 Jun 2005 19:12:30 +0000, no_one wrote:

I agree that the OP seems to have a difficult time with english grammar.
However the question is likely to do with the ability of a spread spectrum
signal (such as GPS) to be properly decoded in what appear to be
disastrously low C/N environments. This might be construed as
"amplification". I suggest he google CDMA and spread spectrum for more
insight.

Also "processing gain." Maybe "correlation receiver," too.

--Mac

kmaryan@gmail.com> wrote in message
news:1118165387.551953.156560@f14g2000cwb.googlegroups.com...
In an attempt not to discourage you from future postings on
sci.electronics.design or other newsgroups, I offer the following tips:
- Don't post your question in the message title. It's rude and will
usually be ignored.
- Try to provide as much detail as possible in your question. Vague
questions get vague answers.
- Be sure to use the correct terminology in your question.
- Mind your grammar.

To answer your question: information theory has almost nothing to do
with amplifying a GPS signal. So I suspect you aren't using the
terminology you intended to use. I assume you meant one of the
following:
A: How does information theory apply to a GPS signal?
B: How do you amplify a GPS signal.
If your question is A, I can offer very little. Information theory
deals mainly with the limits and methods of communicating digital
information. As far as I know, GPS is a digital transmission that is
not especially limited by bandwidth or noise, accordingly, there is
probably relatively little that information theory has to say about a
GPS signal.

If your question is B, I offer the following information. Ask yourself
why you are amplifying it? Then find a suitable amplifier to get from a
1.5GHz GPS signal to whatever output you desire.

These are vague answers, but it was a vague question. Next time please
be more specific or else people may not be willing to help out.

Chris