Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,RATWARE_GECKO_BUILD,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u31Bt2i4012193 for ; Fri, 1 Apr 2016 13:55:02 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1alxbT-0005az-4c for rs_out_1@blacksheep.org; Fri, 01 Apr 2016 12:51:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1alxbS-0005aq-Sc for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 12:51:02 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1alxbR-0001ea-CO for rsgb_lf_group@blacksheep.org; Fri, 01 Apr 2016 12:51:01 +0100 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 128803273E4 for ; Fri, 1 Apr 2016 12:50:29 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id A86CA28A0031 for ; Fri, 1 Apr 2016 11:51:00 +0000 (UTC) Message-ID: <56FE60A4.7000908@abelian.org> Date: Fri, 01 Apr 2016 11:51:00 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <5699ee15d25b401f9991de9ad5c199ea@kabelmail.de> In-Reply-To: <5699ee15d25b401f9991de9ad5c199ea@kabelmail.de> X-Scan-Signature: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: AW: Re: VLF: 8270: now 8269.990Hz Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7541 Good luck with that Uwe. For 2 char messages with 16 bit CRC, the max useful list length is probably around 1k but I don't yet know where the optimum is. Beyond a certain length (corresponding to nearly 3dB gain from the outer code) further list length increases the false hit probability as much as genuine decode probability so there is no further gain to be had (without invoking operator cognition as a 3rd layer to the coding). A nice new computer arrived last week to help with that project. I tried hard to find a way to calculate performance, I even worked out a formula but it had 354 terms and took a day to derive the first term, a week for the 2nd, and I wasn't brave enough to try for any more. So lining up silicon for a brute force evaluation. Also bought a kite but that's for another thread. -- Paul Nicholson --