Patent
Error detector circuit for digital receiver using variable threshold based on signal quality
Niels Vinggaard,Arora Arvind S +1 more
- 15 Apr 1996
90
TL;DR: In this paper, a variable threshold generator (440) is used to generate bad frames of binary information signals which contain distorted bits of data in numbers so great as to prevent a convolutional decoder (738) from generating, accurately, a decoded signal.
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Abstract: An error detector circuit (300) for a discrete receiver indicates bad frames of binary information signals which contain distorted bits of data in numbers so great as to prevent a convolutional decoder (738) from generating, accurately, a decoded signal. A variable threshold generator (440) generates a variable threshold level according to the signal quality estimate for the received signal. When bit errors are detected in numbers beyond the variable threshold or when a first preselected value of the signal quality of a received signal combined with the detected number of bit errors forms a signal beyond a second preselected value, a bad frame is indicated.
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Citations
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References
Patent
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Kanai Toshihito
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TL;DR: In this article, an average bit error rate y is measured on a receiving side in connection with a communication channel being in use and the transmission power is increased by a predetermined amount on the transmitting side.
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Patent
Qam system in which the constellation is modified in accordance with channel quality
William Webb
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TL;DR: In this paper, a radio system is designed as to allow each of a pair of transceivers to assess the quality of the link and to modify the signal constellation accordingly, and each transceiver monitors the quality by assessing the strength of the received signal, or the bit error rate, or both.
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Patent
Management of FDDI physical link errors
Stephen R. Valley,Jeffrey R. Warren +1 more
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TL;DR: In this article, the authors proposed an enhanced link error monitor (LEM) that continuously determines a link error rate (LER) estimate as a function of time based upon the errors seen on the physical links.
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Patent
Error detection system
Gould Adam F,Arora Arvind S +1 more
- 11 Mar 1993
TL;DR: In this paper, an error detection system for discrete receivers was proposed, which indicates bad frames of binary information signal which contain distorted bits in excessive numbers so great as to cause a convolutional decoder to generate an incorrect, decoded signal.
76
Patent
Enhanced decoder for a radio telephone
Ilkka Heikkila,Harri Jokinen,Jukka Ranta +2 more
- 05 Oct 1994
TL;DR: In this article, the estimated signal-to-noise ratio (ESNR) and pseudo bit error rate (PBER) of a recorded speech signal are used to determine whether or not a speech frame is bad.
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