Method and circuits for reducing the peak power of the filtered

Details Method and circuits for reducing the peak power of the filtered Method and circuits for reducing the peak power of the filtered

1993-07-27

1996-02-20

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

375350, 375261, 371 44, 329304, H04B 1500

Patent

active

054935873

ABSTRACT:
The invention relates to a method of reducing the peak power of a signal at the output of the transmit filter of a digital link, e.g. a microwave link. The invention is characterized by the use of a coding in transmission and a decoding in reception, adapted to reduce the peak power of the filtered signal. In the disclosed embodiment, not intended to be limiting, the encoder and the decoder can be realized through simple maps insertable in the baseband part of the system.

REFERENCES:
patent: 4959842 (1990-09-01), Forney et al.
patent: 5159610 (1992-10-01), Eyuboglu et al.
patent: 5162812 (1992-11-01), Aman et al.
"Analysis of Predistortion, Equalization, and ISI Cancellation Techniques in Digital Radio Systems with nonlinear Transmit Amplifiers", G. Karam et al, IEEE Transactions on Communications, vol. 37, No. 12, Dec. 1989, pp. 1245-1253.
G. David Forney, Jr., "Trellis Shaping", IEEE Transactions on Information Theory vol. 38. No. 2, Mar. 1992 pp. 281-300.

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