From ltanaka@inria.fr Thu Aug 24 16:07:33 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!ltanaka From: ltanaka@inria.fr (Liam Tanaka) Newsgroups: comp.dsp Subject: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Aug24.160733.1430@inria.fr> Date: Thu, 24 Aug 1995 16:07:33 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: WinVN 0.99.5 Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. Each message frame begins with an 8-bit Barker sequence [11100010] for frame synchronization. Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Liam Tanaka | ltanaka@inria.fr PGP Key fingerprint: C839 978D 4213 EA0D "Keep the channels open." From fmuller@berkeley.edu Fri Aug 25 13:54:33 1995 Path: ashpoly!cascade!bigsur!berkeley!fmuller From: fmuller@berkeley.edu (Fiona Müller) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Aug25.135433.4279@berkeley.edu> Date: Fri, 25 Aug 1995 13:54:33 GMT References: <1995Aug24.160733.1430@inria.fr> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Aug24.160733.1430@inria.fr>, ltanaka@inria.fr (Liam Tanaka) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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. -- Fiona Müller Tape trading list upon request. SASE required for international mail. From enakamura@pacbell.net Sun Aug 27 07:16:33 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!enakamura From: enakamura@pacbell.net (Elaine Nakamura) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Aug27.071633.9272@pacbell.net> Date: Sun, 27 Aug 1995 07:16:33 GMT References: <1995Aug24.160733.1430@inria.fr> <1995Aug25.135433.4279@berkeley.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Aug25.135433.4279@berkeley.edu>, fmuller@berkeley.edu (Fiona Müller) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! Top-posters will be placed in my ~/.killfile without notice. -- Elaine Nakamura Hayes Optima 288 @ 28,800 bps "Row 14. No joke." From klindqvist@titech.ac.jp Mon Aug 28 13:33:33 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!titech!klindqvist From: klindqvist@titech.ac.jp (Karen Lindqvist) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Aug28.133333.3048@titech.ac.jp> Date: Mon, 28 Aug 1995 13:33:33 GMT References: <1995Aug24.160733.1430@inria.fr> <1995Aug25.135433.4279@berkeley.edu> <1995Aug27.071633.9272@pacbell.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Aug27.071633.9272@pacbell.net>, enakamura@pacbell.net (Elaine Nakamura) writes: > The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! > Top-posters will be placed in my ~/.killfile without notice. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- === Karen Lindqvist === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "5 sigma is a discovery. 7 is a question." From bhernandez@rwth-aachen.de Mon Aug 28 14:27:33 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!bhernandez From: bhernandez@rwth-aachen.de (Bruno Hernández) Newsgroups: comp.dsp Subject: Re: Discussion: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Aug28.142733.2412@rwth-aachen.de> Date: Mon, 28 Aug 1995 14:27:33 GMT References: <1995Aug24.160733.1430@inria.fr> <1995Aug25.135433.4279@berkeley.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Aug25.135433.4279@berkeley.edu>, fmuller@berkeley.edu (Fiona Müller) writes: > 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. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- === Bruno Hernández === Dept of Electrical Engineering, RWTH Aachen Informatik "They will send a copy in my place."