| 摘要 |
A CSK modulation is applied to transmit input data for transmission by using N PN code series. A modulator for N series synthesizes a predetermined number (n) of PN code series selected from N PN code series in response to m bits in the input data, and the synthesized code series is transmitted onto a transmission medium through a transmitting interface. The PN code series which is actually transmitted has a maximum value of the absolute magnitude of auto-correlation which is always greater than a maximum value of the absolute value of cross-correlations between the remaining synthesized PN code series. |
