| 摘要 |
PURPOSE:To eliminate the need to find a phase shift between transmission and reception and to reduce errors in reception by multiplying a subcarrier separate signal by the complex of a local for subcarrier separation and a rotational complex vector which adjusts a phase at the time of known signal detection to a specific phase. CONSTITUTION:The subcarrier separate signal 10 is multiplied by the complex conjugate 1 of the local 7 for subcarrier separation. The order of the multiplication is not limited. Here, a place 15 is a place where a rotational complex vector having a subcarrier frequency is generated and its phase is adjusted by a known signal detection device 14 which detects a known signal. This multi-subcarrier orthogonal demodulating method multiplies the subcarrier separate signal by the complex conjugate of the local for subcarrier separation and the rotational complex vector which adjusts the phase at the known signal detection time to the specific phase to eliminate the need to find the phase deviation and removes an error when the phase shift is found, thereby decreasing reception errors. |
