| 摘要 |
PURPOSE:To prevent the characteristic of a bit error rate from deteriorating by performing waveform arrangement on data by data waveform arranging filters in data transmission and reception parts, and performing the waveform arrangement on the chip waveform of a PN signal by chip waveform arranging filters in the transmission and reception parts. CONSTITUTION:Root roll-off waveform arrangement is applied on input data 1 to be transmitted by a transmission part data waveform arranging filter 23. A reception signal 10 goes to a reception signal 10a on which the waveform arrangement is applied by a reception chip waveform arranging filter 25 that is a band-pass filter matched to a transmission part chip waveform arranging filter 24. Full roll-off waveform arrangement is applied on the chip waveform of a pseudo noise(PN) signal included in a waveform-arranged reception signal 10a by the transmission part chip waveform arranging filter 24 and the reception part chip waveform arranging filter 25, therefore, no interference between chips occurs. In such a way, it is possible to prevent the characteristic of the bit error rate from deteriorating. |
