Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: LF: Re[2]: VLF: Tonite...

To: [email protected]
Subject: Re: LF: Re[2]: VLF: Tonite...
From: Paul Nicholson <[email protected]>
Date: Mon, 6 Mar 2017 21:09:02 +0000
Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:To:References:Reply-To:Subject:Sender:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=8XX+HesUEoWv1mQ5Zf1dsh8KoJa6oozM8qG/iIqA+Ek=; b=qQqajxCtXUi1IhQhevnF9LOG06 k0Vzcl3DkAG7TEZo2tB+ZNpP6oszoVkNLLCZFZIgFOMqHMVy1JVg6RgS1DyDdi5zQNyaRMzYCQwIy /sdCfhbptPnNJ5dTBvRcaYbwh8CZkXEd0rXtA934w0yyvT0LgY61XNwskRp1CDe/7rtw=;
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1

I wrote:

> Not quite enough to decode.

Actually it did decode with a sneaky -f9 option
to the Linux decoder.

Rank 440334 Eb/N0 = -0.2 BER 40.0% phase 0 0 30 30

and

Rank 218308 Eb/N0 = -0.9 BER 40.8% phase 30 30 60 60

so a slight frequency offset perhaps?

The -f9 option tells the decoder to output all decodes
found in the list.  By default it stops at the first
(which in this case is a false decode).

The correct decode is actually the 2nd strongest
in Eb/N0 ranking, 3rd strongest by path metric,
after a full phase search.

I didn't notice any timing offset when I examined the
previous WAV file from Alex (Feb 28th 8chmessage.wav).


--
Paul Nicholson
--



<Prev in Thread] Current Thread [Next in Thread>