From klarsson@utexas.edu Thu Feb 02 10:21:07 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!klarsson From: klarsson@utexas.edu (Karen Larsson) Newsgroups: comp.dsp Subject: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb02.102107.3423@utexas.edu> Date: Thu, 02 Feb 1995 10:21:07 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 11 Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). 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. -- Karen Larsson US Robotics Courier V.34 @ 19,200 bps "When every node is whole, the channel opens." From mkang@mit.edu Sat Feb 04 02:29:07 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!mit!mkang From: mkang@mit.edu (Min-jun Kang) Newsgroups: comp.dsp Subject: Re: [INFO] DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Feb04.022907.7820@mit.edu> Date: Sat, 04 Feb 1995 02:29:07 GMT References: <1995Feb02.102107.3423@utexas.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Feb02.102107.3423@utexas.edu>, klarsson@utexas.edu (Karen Larsson) writes: > Differential Binary Phase Shift Keying (DBPSK) parameter extraction results. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Min-jun Kang Tape trading list upon request. SASE required for international mail.