| 摘要 |
PURPOSE:To obtain a spectrum dispersion demodulating circuit that operates stably over a wide dynamic range of input C/N ratio. CONSTITUTION:To input spectrum dispersion signal 1, noise 3 output from noise generator 4 is added by synthesizer 2 such that the addition of the noise affect no demodulation (data error ratio), and is input in AGC circuit 6 such that input C/N ratio of spectrum dispersion demodulating section 8 is not improved more than a constant value. Accordingly, this spectrum dispersion demodulating circuit can operate stably over a wide dynamic range of input C/N ratio. |
