From kgarcia@rwth-aachen.de Wed Jul 05 19:35:30 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!kgarcia From: kgarcia@rwth-aachen.de (Katrin García) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul05.193530.8992@rwth-aachen.de> Date: Wed, 05 Jul 1995 19:35:30 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 10 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. 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). Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Katrin García Tape trading list upon request. SASE required for international mail. From rweber@illinois.edu Thu Jul 06 01:43:30 1995 Path: ashpoly!cascade!bigsur!illinois!rweber From: rweber@illinois.edu (Raj Weber) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul06.014330.7069@illinois.edu> Date: Thu, 06 Jul 1995 01:43:30 GMT References: <1995Jul05.193530.8992@rwth-aachen.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jul05.193530.8992@rwth-aachen.de>, kgarcia@rwth-aachen.de (Katrin García) 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. Top-posters will be placed in my ~/.killfile without notice. -- Raj Weber Hayes Optima 288 @ 33,600 bps "Hardware is temporary. The signal survives." From htakahashi@u-tokyo.ac.jp Fri Jul 07 12:36:30 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!u-tokyo!htakahashi From: htakahashi@u-tokyo.ac.jp (Hugo Takahashi) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul07.123630.2767@u-tokyo.ac.jp> Date: Fri, 07 Jul 1995 12:36:30 GMT References: <1995Jul05.193530.8992@rwth-aachen.de> <1995Jul06.014330.7069@illinois.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul06.014330.7069@illinois.edu>, rweber@illinois.edu (Raj Weber) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. > Top-posters will be placed in my ~/.killfile without notice. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Hugo Takahashi Hayes Optima 288 @ 28,800 bps "Marcus is not one man." From dschneider@clari.net Sat Jul 08 19:52:30 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!dschneider From: dschneider@clari.net (Dmitri Schneider) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul08.195230.4377@clari.net> Date: Sat, 08 Jul 1995 19:52:30 GMT References: <1995Jul05.193530.8992@rwth-aachen.de> <1995Jul06.014330.7069@illinois.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Jul06.014330.7069@illinois.edu>, rweber@illinois.edu (Raj Weber) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. > Top-posters will be placed in my ~/.killfile without notice. A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! -- Dmitri Schneider -- ClariNet Communications Corp "Row 14. No joke." From gsmirnov@purdue.edu Mon Jul 10 09:18:30 1995 Path: ashpoly!cascade!brgate!saturno!purdue!gsmirnov From: gsmirnov@purdue.edu (Graham Smirnov) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Jul10.091830.4481@purdue.edu> Date: Mon, 10 Jul 1995 09:18:30 GMT References: <1995Jul05.193530.8992@rwth-aachen.de> <1995Jul06.014330.7069@illinois.edu> <1995Jul07.123630.2767@u-tokyo.ac.jp> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul07.123630.2767@u-tokyo.ac.jp>, htakahashi@u-tokyo.ac.jp (Hugo Takahashi) writes: > A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single! Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Graham Smirnov *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0