base on the shannon capacity limit,dicuss the possibility of transmitting information when siganl is lower than the noise? some ways of trasmitting would be be spreading the specturm,using reed coding method. what are some other ways to transmit information when signal is lower than the noise
shannon capacity limit
Started by ●January 12, 2006
Reply by ●January 12, 20062006-01-12
omg wrote:> base on the shannon capacity limit,dicuss the possibility of transmitting > information when siganl is lower than the noise? > > some ways of trasmitting would be be spreading the specturm,using reed > coding method. > > what are some other ways to transmit information when signal is lower > than > the noiseThere are two methods to accomplish the transmission of the data below the noise: 1. Find someone who knows the subject and pay him for doing the job. 2. Go to the library. Both methods are based on the common sense and don't require asking the same stupid question over and over again. VLV
Reply by ●January 13, 20062006-01-13
> > >omg wrote: >> base on the shannon capacity limit,dicuss the possibility oftransmitting>> information when siganl is lower than the noise? >> >> some ways of trasmitting would be be spreading the specturm,using reed >> coding method. >> >> what are some other ways to transmit information when signal is lower >> than >> the noise > >There are two methods to accomplish the transmission of the data below >the noise: > >1. Find someone who knows the subject and pay him for doing the job. >2. Go to the library. > >Both methods are based on the common sense and don't require asking the >same stupid question over and over again. > >VLV > >u r a idiot,both osf those thing has already been done before i came hereto ask,if u do not wish to help,fk off then
Reply by ●January 13, 20062006-01-13
omg wrote:> base on the shannon capacity limit,dicuss the possibility of transmitting > information when siganl is lower than the noise? > > some ways of trasmitting would be be spreading the specturm,using reed > coding method. > > what are some other ways to transmit information when signal is lower > than > the noiseIf you've already done the research into this topic then you should know that using the shannon limit you can either spread the transmitted signal spectrum in some intelligent manner, or you can transmit at a lower overall bit rate, perhaps using some error coding of some kind. If you know the noise, then you can filter it out to increase the signal to noise ratio, and thereby improve the possible capacity.
Reply by ●January 13, 20062006-01-13
"omg" <jimmybai123@yahoo.com> writes:> base on the shannon capacity limit,dicuss the possibility of transmitting > information when siganl is lower than the noise? > > some ways of trasmitting would be be spreading the specturm,using reed > coding method.ECC coding will not change the channel capacity at all. It merely allows you make the channel reliable.> what are some other ways to transmit information when signal is lower > than > the noiseIncrease the signal power and/or lower the noise power. Besides these and widening the bandwith, there's nothing else - it's a pretty simple equation. -- % Randy Yates % "I met someone who looks alot like you, %% Fuquay-Varina, NC % she does the things you do, %%% 919-577-9882 % but she is an IBM." %%%% <yates@ieee.org> % 'Yours Truly, 2095', *Time*, ELO http://home.earthlink.net/~yatescr