H - Electricity – 03 – K
Patent
H - Electricity
03
K
329/6
H03K 9/00 (2006.01) H04L 1/20 (2006.01) H04L 25/03 (2006.01) H04L 27/38 (2006.01)
Patent
CA 2037535
In a demodulating system for demodulating a modulated signal into decoded signals (S11'-12', S21'-22'), an error signal correcting circuit (55) is used in correcting discrimination error signals (Ep, Eq) supplied from a demodulator (52) in compliance with error location signals (Spl-2, Sql-2) supplied from an error-correcting decoder (54) and in producing corrected discrimination error signals (Ep', Eq') for supply to an adaptive equalizer (51) which is additionally supplied with polarity signals (Dp, Dq) from a delay circuit (53). The modulated signal is equalized in accordance with the corrected discrimination error signals and the polarity signals, demodulated into demodulated signals and the discrimination error signals, and error corrected and decoded into the decoded signals. The delay circuit delays P-channel and Q-channel polarity bits of the demodulated signal into the polarity signals. The error-correcting decoder produces the error location signals by using P-channel and Q-channel error correcting code bits of the demodulated signals. The modulated signal may be supplied first to the demodulator and then to the equalizer.
Corporation Nec
Smart & Biggar
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