Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,MIME_HTML_ONLY,RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id uBSGOXiU028844 for ; Wed, 28 Dec 2016 17:24:34 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cMGyB-0007vQ-Qm for rs_out_1@blacksheep.org; Wed, 28 Dec 2016 16:20:51 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cMGyB-0007vH-Eo for rsgb_lf_group@blacksheep.org; Wed, 28 Dec 2016 16:20:51 +0000 Received: from smtpout5.wanadoo.co.uk ([80.12.242.80] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1cMGy8-00047Y-3s for rsgb_lf_group@blacksheep.org; Wed, 28 Dec 2016 16:20:50 +0000 Received: from [192.168.1.230] ([81.154.48.103]) by mwinf5d62 with ME id RULf1u00F2Dazah03ULh3o; Wed, 28 Dec 2016 17:20:46 +0100 X-ME-Helo: [192.168.1.230] X-ME-Auth: bW9sbGllc0BmcmVlc2VydmUuY28udWs= X-ME-Date: Wed, 28 Dec 2016 17:20:46 +0100 X-ME-IP: 81.154.48.103 To: rsgb_lf_group@blacksheep.org References: <5860C842.90809@abelian.org> <159461afc0c-505-23d0a@webprd-a16.mail.aol.com> From: Martin Evans Message-ID: Date: Wed, 28 Dec 2016 16:20:39 +0000 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <159461afc0c-505-23d0a@webprd-a16.mail.aol.com> X-Scan-Signature: 4c0633a540d76adc241b9d3cede72a57 Subject: Re: LF: Article on forward error correction Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 9974 Speaking as someone who hasn't the faintest clue of all this digital stuff, I can't praise Paul's article highly enough -

Admittedly I got a bit lost towards the end, but I do now have a rough understanding of the principles, which is a whole lot more than I had to begin with.

It's a brilliantly written, clear, writeup which deserves to be published far and wide.

Well done.

Martin GW3UCJ.

************************

I wrote a non-mathematical introductory article about how
forward error correction works.

There's a lot of material on the web about FEC but most
of it is very technical and tends to concentrate on one or
another particular coding scheme. I couldn't find anything
that demonstrates and really explains in simple terms the
essential principle of it.

So I thought I'd try to write something, perhaps to see if
I can understand it myself.

The article should appeal to anyone who's wondered how 'coding'
a message, which increases its bandwidth and reduces its S/N,
can actually lead to greatly improved communications.

http://abelian.org/fec/pn161218/

or in pdf format

http://abelian.org/fec/pn161218.pdf

Whether I've succeeded or not, the reader will have to judge.

--
Paul Nicholson
--