Convolutional coding and viterbi decoding system transparent to

Details Convolutional coding and viterbi decoding system transparent to Convolutional coding and viterbi decoding system transparent to

1995-02-15

1996-09-10

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

375281, 370112, 371 43, H04L 512

Patent

active

055555470

ABSTRACT:
In a convolutional coding and Viterbi decoding system transparent to phase skips of .pi. and .pi./2 with applications in TDMA transmission, the transmitter 3 includes a demultiplexer receiving a digital bit stream and operating at the bit timing rate, a QPSK differential coder receiving the demultiplexed bit streams and supplying two coded bit streams, two convolutional coders each supplying one code word, and two multiplexers each receiving one code word from a respective convolutional coder and supplying one component of a symbol to be transmitted. The receiver generates two received symbol components which are applied to two demultiplexers each supplying one code word. Each bit of a code word is applied to a single Viterbi decoder. A QPSK type differential decoder supplies two decoded bit streams which are then multiplexed.

REFERENCES:
patent: 4489418 (1984-12-01), Mazo
patent: 4713817 (1987-12-01), Wei
patent: 4939734 (1990-07-01), Heichler
patent: 5023889 (1991-06-01), Divsalar et al.
patent: 5233630 (1993-08-01), Wolf
patent: 5384809 (1995-01-01), Yagi et al.
40th IEEE Vehicular Technology Conference, 6-9/1990, Orlando, US, IEEE, New York, US, 1990, pp. 471-475 Elnoubi et al "Performance of trellis coded QPSK in mobile radio channels".
Eleventh Annual International Phoenix Conference on Computers and Communications, 1-3/4/1992, Scottsdale, US; pp. 232-239, Ross et al, "Pragmatic tellis coded modulation; a simulation using 24-sector quantized 8-PSK".
French Search Report FR 9401876.

Affiliated with

Also associated with

Rating

Convolutional coding and viterbi decoding system transparent to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Convolutional coding and viterbi decoding system transparent to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Convolutional coding and viterbi decoding system transparent to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1330138