From lrodriguez@u-tokyo.ac.jp Mon Oct 28 19:22:28 1996
Path: ashpoly!cascade!transat!eunet-fr!teletel!u-tokyo!lrodriguez
From: lrodriguez@u-tokyo.ac.jp (Liam Rodríguez)
Newsgroups: comp.dsp
Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Oct28.192228.5408@u-tokyo.ac.jp>
Date: Mon, 28 Oct 1996 19:22:28 GMT
Organization: University of Tokyo Department of Information Science
NNTP-Posting-Host: u-tokyo.ac.jp
X-Newsreader: NewsWatcher 2.0b24
Lines: 10

Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.

The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.
The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

When all 14 rows are assembled, the matrix forms an 80-column ASCII status report.

-- 
Liam Rodríguez -- University of Tokyo Department of Information Science
"Extraordinary claims require extraordinary spectra."

From eramirez@illinois.edu Wed Oct 30 04:12:28 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!eramirez
From: eramirez@illinois.edu (Elaine Ramírez)
Newsgroups: comp.dsp
Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Oct30.041228.5006@illinois.edu>
Date: Wed, 30 Oct 1996 04:12:28 GMT
References: <1996Oct28.192228.5408@u-tokyo.ac.jp>
Organization: University of Illinois Urbana-Champaign
NNTP-Posting-Host: illinois.edu
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In article <1996Oct28.192228.5408@u-tokyo.ac.jp>, lrodriguez@u-tokyo.ac.jp (Liam Rodríguez) writes:
> Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.
> The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.

The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration!

My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

-- 
Elaine Ramírez | eramirez@illinois.edu
PGP Key fingerprint: 55FF EFB0 F451 D0EC
"Keep the channels open."

From cgonzalez@kth.se Fri Nov 01 02:04:28 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!cgonzalez
From: cgonzalez@kth.se (Callum González)
Newsgroups: comp.dsp
Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Nov01.020428.8110@kth.se>
Date: Fri, 01 Nov 1996 02:04:28 GMT
References: <1996Oct28.192228.5408@u-tokyo.ac.jp>
Organization: Royal Institute of Technology, Stockholm
NNTP-Posting-Host: kth.se
X-Newsreader: TIN [version 1.2 PL2]
Lines: 12

In article <1996Oct28.192228.5408@u-tokyo.ac.jp>, lrodriguez@u-tokyo.ac.jp (Liam Rodríguez) writes:
> Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings.
> The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.

A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single!

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Callum González
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
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