Method for redundancy-saving, error-correcting coding in digital

Details Method for redundancy-saving, error-correcting coding in digital Method for redundancy-saving, error-correcting coding in digital

1989-07-24

1992-05-19

Smith, Jerry

Excavating

371 45, G06F 1100

Patent

active

051154382

ABSTRACT:
For the employment of an FEC method in systems of a variety of types, the serial binary data stream to be transmitted is supplied to a means for rate matching and for serial-to-parallel conversion wherein, first, the data rate is increased to the transmission rate upon formation of free locations for the acceptance of redundancy bits and, second, a corresponding plurality of parallel data streams are generated from the serial data stream, respectively one half of said parallel data streams forming the I-channel and the other half forming the Q-channel. The redundancy locations lie in the least significant bits of the I-channel and Q-channel. The more significant bits of the I-channel and the Q-channel directly control the appertaining inputs of a quadrature modulator, whereas the least significant bit is supplied to the appertaining input via a respective multiplexer. In addition, the least significant bit of the I-channel and the Q-channel is respectively supplied to a coder, each of these coders considering a defined plurality of incoming bits; and generating one or more redundancy bits therefrom in accord with the coding rule of a specific underlaid code. These redundancy bits are inserted with the assistance of the multiplexers at locations in the I-channel and Q-channel, that are provided for this purpose.

REFERENCES:
patent: 4369512 (1983-01-01), Brossard et al.
patent: 4404674 (1983-09-01), Rhodes
patent: 4476458 (1984-10-01), Dollard
patent: 4493082 (1985-01-01), Cumberton et al.
patent: 4622670 (1986-11-01), Martin
patent: 4677626 (1987-06-01), Betts et al.
patent: 4700363 (1987-10-01), Tomlinson et al.
M. Kavehrad: "Convolutional Coding For High-Speed Microwave Radio Communications", AT&T Technical Journal, vol. 64, No. 7, Sep. 1985, pp. 1625-1637.
S. Bellini et al.: "Coding For Error Correction in High Capacity Digital Radio: An Application On Radio-Ralay Systems (ECRR)", Nov. 1986, pp. 166-172.
T. Noguchi et al., "6 GHz 135 MBPS Digital Radio System With 64 QAM Modulation", International Conference On Communications (ICC), Jun. 19-22, 1983, vol. 3, pp. 1472-1477.
G. Ungerboeck, "Trellis-Coded Modulation With Redundant Signal Sets", Parts I and II, IEEE Communications Magazine, vol. 25, No. 2, Feb. 1987, pp. 5-21.
P. Mecklenburg et al., "Correction of Errors in Multilevel Gray-Coded Data"; IEEE Transactions Information Theory, vol. IT-19, No. 3, May 1973, pp. 336-340.
Clark et al., Error-Correction Coding for Digital Communications, 1981, pp. 9, 285-292.

Affiliated with

Also associated with

Rating

Method for redundancy-saving, error-correcting coding in digital does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for redundancy-saving, error-correcting coding in digital, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for redundancy-saving, error-correcting coding in digital will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2419975