Method of monitoring circuit quality and circuit therefor

摘要

In a digital wireless communication device having an error correction function, the circuit quality is quickly detected with maintained accuracy. The circuit quality to such an extent that a bit error rate (BER) is slightly degraded (10−10 to 10−12) is quickly detected with maintained accuracy by monitoring the circuit quality based on a C/N error pulse into which C/N information scaling a carrier-to-noise power ratio (C/N) of a received signal has been converted.