Talk:Communication channel

message: --203.129.193.45 04:50, 21 December 2005 (UTC)

message: among other cleanups, i removed this line (which was on channel):
 One of possibly millions of often times pointless wavelengths decoded by a television system.
am i wrong to see it as a duplicate meaning? what is 'pointless' implying? it is quite possible i have misunderstood.
my edits here are solely from the basis of cleanup, i am far from an expert. anyone who knows more is strongly encouraged to fix any mistakes, including re-opening communications channel.
also, i guess this article should not be in :category:telecommunications stubs since some of it is about non-telecom. am i right about this?
Burgher 20:50, 9 Jun 2005 (UTC)
thread_title: Untitled

message: This article fails to distinguish between the many different meanings of "channel" within various subfields of communications.  The result is confusion since it is never clear which definition of channel is being used. Is it a radio channel, a television channel, an audio channel, an information theoretic channel, ...?  Indeed the article arbitrarily swaps between meanings.
As a first step, I propose that an article Channel (information theory) should be created.  "Channel" has a precise meaning in information theory, summarised in Shanon's paper.   The new article could describe "channel" as it is understood in information theory.  It could talk about channel capacity, with a link to the main article.  It could talk about how the theoretical concept of channel in information theory relates to real life.  It might then go on to explain the idea of channel modeling (give full details in an article on channel modeling) and simulation.  Perhaps list all the various of classes of channel models with links to articles (or keep this for a channel modeling article?).  Maybe mention channel coding?
Separate articles could also be created for other uses of the word "channel" in communications.
In time Channel (communications) could become either a disambiguation page or a cursory overview of the various meanings of channel in a communications sense with links to articles. John Dalton (talk) 04:25, 2 January 2009 (UTC)
replies: text: That might work.  But before starting a new article, make sure it's the best way.  An alternative would be to make two major sections in this article, for information theoretic channels and physical channels.  There's already a Channel (broadcasting) that you can offload lots of TV and radio stuff to. Dicklyon (talk) 04:34, 2 January 2009 (UTC)
thread_title:  Article is a misnomer, resulting in confusion 

message: I am missing an article summarizing particularly popular channel models, including their capacity. Should this be done here? Or in channel capacity? Or some article on its own?
Popular examples: discrete memoryless channels: binary symmetric channel and binary erasure channel, time-continuous analog channel: (Additive White) Gaussian noise channel (AWGN), etc.
Particularly missing: what means discrete vs. analog channel, memoryless channel, symmetric vs. asymmetric channel
Thoughts? Nageh (talk) 22:11, 9 January 2010 (UTC)
replies: text: Great suggestion. The channel model section of this article is perfect for that. Please improve this rather poor article. However, i think equations can be left out of this article. Theoretical information theory should be placed in the end of this article because very few are interested in that, or understand it. Central concepts of a beginners course in computer networks or telecommunications should be mentioned early in this article, for example simplex and duplex channels. Mange01 (talk) 15:35, 10 January 2010 (UTC)
replies: text: Thanks for your comment. It was more intended as a hint for other people to write about it. ;) I don't feel qualified enough to do it myself, and I'm lacking the references. Hope somebody else picks it up! Nageh (talk) 16:49, 10 January 2010 (UTC)

text: Thanks, Mange01, I think the recent changes are a step forward! Nageh (talk) 21:22, 18 January 2010 (UTC)
thread_title:  Popular channel models 

message: I created a redirect for channel noise to this article, because neither noise (electronics) nor noise (radio) exactly fits. This needs to be better addressed by the current article. Nageh (talk) 13:27, 20 February 2010 (UTC)
replies: text: My gripe with dealing with noise in telecommunications within Noise (electronics) is that noise in electronics is more specific than noise in telecommunications, which actually refers to channel noise. For example, in telecommunications, noise can also appear in optical channels, maybe even acoustic channels, and even in higher layers (e.g., buffer overrun in packet routers resulting in erasures). One suggestion was to merge telecommunication aspects of noise into the article noise, but in the end I think it should be a separate article. I still need to think about how this could be done, e.g., through a split of the current article as you suggested. Nageh (talk) 07:52, 29 March 2010 (UTC)
thread_title:  Redirect from [[channel noise]]