Return-Path: X-Spam-DCC: paranoid 1233; 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 u3BLSZIl007569 for ; Mon, 11 Apr 2016 23:28:35 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1apjKC-0004uM-JK for rs_out_1@blacksheep.org; Mon, 11 Apr 2016 22:24:48 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1apjKC-0004u5-Ay for rsgb_lf_group@blacksheep.org; Mon, 11 Apr 2016 22:24:48 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1apjKA-00007m-6n for rsgb_lf_group@blacksheep.org; Mon, 11 Apr 2016 22:24:47 +0100 Received: from pn.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 5F6A43273E4 for ; Mon, 11 Apr 2016 22:23:59 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 473C5400048 for ; Mon, 11 Apr 2016 21:24:45 +0000 (UTC) To: rsgb_lf_group@blacksheep.org From: Paul Nicholson Message-ID: <570C161D.8040204@abelian.org> Date: Mon, 11 Apr 2016 21:24:45 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 X-Scan-Signature: 086f3faad0220c9ae57a7913e711a86d Subject: LF: EbNaut decoder upgrade Content-Type: text/plain; charset=utf-8; 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: 7665 An updated decoder: v0.4c http://abelian.org/ebnaut/win32/ebnaut-rx.exe http://abelian.org/ebnaut/win64/ebnaut-rx.exe fixes a few minor bugs and has a small improvement which can significantly reduce the time taken for a full phase search especially when using longer list lengths. No changes to improve decode probability. A note about CRC size and decoder list length - The list length to used depends on the CRC size. For a CRC of size C bits you should use a list length of 2 to the power of C-1 or thereabouts. For example 32768 for a 16 bit CRC, or 128 for an 8 bit CRC. The value is not very critical so you can round it to a sensible number such as 30k. In fact you can halve this recommended length and only lose about 1% or so decode success rate. It doesn't harm decode performance if you use a longer list but it doesn't increase the probability of successful decode and the decoder takes longer to run. The default setting of CRC-16 and 20k list length is turning out to be reasonable but I'm not yet able to say what is the best CRC size to use in any situation. -- Paul Nicholson --