H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/72
H04L 25/49 (2006.01) H04L 25/497 (2006.01)
Patent
CA 1332452
ABSTRACT OF THE DISCLOSURE A digital communication system comprises a transmitter including a (1,0,-1) precoder for precoding a unipolar input digital data stream and a bipolar converter for converting the output signal of the (1,0,-1) precoder into a bipolar signal. The bipolar signal is transmitted through a metallic transmission line to a receiver. The receiver comprises a digitizer for digitizing the transmitted signal, and a line egualization filter for equalizing losses encountered during propagation through the transmission line. A (1, 1) converter is provided for converting the output signal of the line equalization filter in a manner opposite to the bipolar converter. A clock recovery circuit derives sample timing pulses from the output of the line equalization filter. A decoder responds to the sample timing pulses to detect symbols from the output signal of the (1, 1) converter to generate a replica of the original digital data stream.
575185
Hirosaki Botaro
Shimizu Hiroshi
Tsujimura Yasuhiro
Yoshida Toshihisa
Corporation Nec
Smart & Biggar
LandOfFree
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