Article View: uk.tech.digital-tv
Article #141Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue?
From: Richard Crowley
Date: Fri, 28 Sep 2007 14:59
Date: Fri, 28 Sep 2007 14:59
16 lines
2372 bytes
2372 bytes
"Dave Platt" wrote ... > No. No. And, no. You cannot possibly do this... for several reasons. > > For one thing, trying to convey 300 bits of information per symbol is > still grossly optimistic. If you take a look at real-world modulation > systems (QAM64 and so forth) you'll find that they send much less > information per symbol... I don't have the best numbers available off > of the top of my head, but I'd be surprised if there's a system in > practical use which tries to send more than 16 bits per symbol. The > amount of noise on real-world communcation channels makes it > impractical-to-impossible to go much beyond that... and you are > proposing something *far* beyond that. Trust me - the laws of physics > in this universe won't permit you to do it. Perhaps "Radium" should ask his questions over there in that other universe where *his* laws of physics apply.
Technical Details
Message-ID:
<5m4j5oFbmd8mU1@mid.individual.net>Path:
arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mailReferences:
<46fc71d2$0$24285$4c368faf@roadrunner.com> <u9hus4-6vi.ln1@radagast.org>Show Full Headers
Complete Article Headers
X-Google-Thread: f928c,9d8320c16fbdcf84 X-Google-Thread: 1133a5,9d8320c16fbdcf84 X-Google-Thread: 115947,9d8320c16fbdcf84 X-Google-Thread: 1118be,7e05cb8426dfb96 X-Google-Thread: ffcae,7e05cb8426dfb96 X-Google-Thread: 107cee,7e05cb8426dfb96 X-Google-Thread: f508e,9d8320c16fbdcf84 X-Google-Thread: f7d8a,9d8320c16fbdcf84 X-Google-Thread: fdad6,9d8320c16fbdcf84 X-Google-Attributes: gidf928c,gid1133a5,gid115947,gid1118be,gidffcae,gid107cee,gidf508e,gidf7d8a,gidfdad6,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Richard Crowley" <rcrowley@xp7rt.net> Newsgroups: uk.tech.digital-tv,rec.video.production,uk.media.tv.misc,sci.electronics.components,uk.tech.broadcast,sci.electronics.misc,aus.radio.broadcast,ba.broadcast,alt.radio.broadcasting Subject: Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue? Date: Fri, 28 Sep 2007 07:59:03 -0700 Lines: 18 Message-ID: <5m4j5oFbmd8mU1@mid.individual.net> References: <46fc71d2$0$24285$4c368faf@roadrunner.com> <u9hus4-6vi.ln1@radagast.org> X-Trace: individual.net Kppc7etSPaTrU2rBm/dKbg7mGVUwkfcBSsqnQz1EkHttOz0t18 Cancel-Lock: sha1:FGq1zHxrqcU2P8/1lI0U8OPebU0= X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3028 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028