| 摘要 |
PROBLEM TO BE SOLVED: To realize the communication of plural channels even in the same frequency section and to effectively use a frequency by transmitting the polarizations of te radio waves of the respective channels by means of changing them in a spread spectrum communication. SOLUTION: In the spread spectrum communication, the polarized waves of the radio waves of the respective channels are changed and transmitted. Namely, the polarized waves of a horizontal polarization transmission antenna 6, a horizontal polarized reception antenna 7, a vertical polarization wave transmission antenna 14 and a vertical polarization reception antenna 15 are changed. If the antenna of a prescribed antenna characteristic is used when S/N of a system lacks by 10dB in two systems transmission, for example, the unnecessary radio wave is removed by more than 10dB of C/N wen the angle deviation of the antenna is within ±3 degrees. Then, it is added to the spreading gain of a spread spectrum system, and a system function can be satisfied. |
