| 摘要 |
PROBLEM TO BE SOLVED: To obtain demodulation data with a small error rate by suppressing the effect of an interference signal from other station and the effect of multi- path in a communication system of the code division multiple address system. SOLUTION: A synchronizing signal detection section 30 detects a synchronizing signal and generates sets of amplitude information Ama, Amb and sets of phase information θma, θmb of a main wave and a delay wavelength, respectively. A synchronizing signal elimination section 40 uses a recovered synchronizing signal S30 to provide reception data S40 resulting from a signal S20 of a radio demodulation section 20 subtracted by the synchronizing signal to an interruption section 50-1. Interference elimination sections 50-1-50-K use the amplitude information Ama, Amb and sets of phase information θma, θmb to estimate signals S50ak , S50bk , of its own station while eliminating interference between stations from received data S40. A correlation detection demodulation section 70 applies correlation detection to the signals S50ak , S50bk , to obtain a demodulation signal S70 of its own station. |
