H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 27/01 (2006.01) H04L 1/00 (2006.01) H04L 25/03 (2006.01)
Patent
CA 2300796
The adder subtracts the estimated echo from the input symbol to generate the demodulated symbol, and the Trellis decoder applies Trellis decoding onto the demodulated symbol to generate maximum likelihood transmission symbol sequence. The feedback register stores estimated transmission symbol values for a feedback filter, and A coefficient register stores coefficient values for the feedback filter. The feedback register updating unit generates the estimated transmission symbol and the estimated transmission symbol value corresponding to the next time point based on the demodulated symbol, the maximum likelihood transmission symbol sequence and the estimated transmission symbol corresponding to a current time point, and updates the values stored in the feedback register by using the estimated transmission symbol value corresponding to the next time point. The coefficient updating unit updates the values stored in the coefficient register based on the demodulated symbol and the estimated transmission symbol. The estimated echo calculator calculates the estimated echo based on the values stored in the feedback register and the values stored in the coefficient register.
Abe Yoshinori
Tahara Kazushi
Macrae & Co.
Pioneer Corporation
LandOfFree
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