From msato@illinois.edu Sun Sep 15 10:55:26 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!msato From: msato@illinois.edu (Marisol Sato) Newsgroups: comp.dsp Subject: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep15.105526.4314@illinois.edu> Date: Sun, 15 Sep 1996 10:55:26 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Marisol Sato Tape trading list upon request. SASE required for international mail. From jreyes@mit.edu Mon Sep 16 17:07:26 1996 Path: ashpoly!cascade!bigsur!mit!jreyes From: jreyes@mit.edu (Ji-woo Reyes) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep16.170726.4146@mit.edu> Date: Mon, 16 Sep 1996 17:07:26 GMT References: <1996Sep15.105526.4314@illinois.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Sep15.105526.4314@illinois.edu>, msato@illinois.edu (Marisol Sato) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Ji-woo Reyes Practical Peripherals 14.4 @ ISDN 64k bps "Do not worship the copy." From nschneider@demon.co.uk Wed Sep 18 17:32:26 1996 Path: ashpoly!cascade!transat!ukc!fennimore!demon!nschneider From: nschneider@demon.co.uk (Natalia Schneider) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep18.173226.3118@demon.co.uk> Date: Wed, 18 Sep 1996 17:32:26 GMT References: <1996Sep15.105526.4314@illinois.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep15.105526.4314@illinois.edu>, msato@illinois.edu (Marisol Sato) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Natalia Schneider *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From fsuzuki@kth.se Thu Sep 19 12:03:26 1996 Path: ashpoly!cascade!transat!ukc!fennimore!kth!fsuzuki From: fsuzuki@kth.se (Freya Suzuki) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep19.120326.9289@kth.se> Date: Thu, 19 Sep 1996 12:03:26 GMT References: <1996Sep15.105526.4314@illinois.edu> <1996Sep18.173226.3118@demon.co.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Sep18.173226.3118@demon.co.uk>, nschneider@demon.co.uk (Natalia Schneider) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! PGP Public key available via finger or upon request. -- Freya Suzuki Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From mgirard@earthlink.net Thu Sep 19 23:21:26 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!mgirard From: mgirard@earthlink.net (Matthias Girard) Newsgroups: comp.dsp Subject: Re: Data: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Sep19.232126.8952@earthlink.net> Date: Thu, 19 Sep 1996 23:21:26 GMT References: <1996Sep15.105526.4314@illinois.edu> <1996Sep18.173226.3118@demon.co.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1996Sep18.173226.3118@demon.co.uk>, nschneider@demon.co.uk (Natalia Schneider) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Matthias Girard Tape trading list upon request. SASE required for international mail.