To provide a novel demodulation system that makes high-speed data transmission possible.
In the demodulation method, a variable delay circuit 312 delays a carrier signal SC having a prescribed frequency, and outputs a modulated signal SESM. A delay setting unit 314 sets a delay period for the variable delay circuit 312 according to a data signal SBB to be modulated. The delay setting unit 314 assigns each symbol A in the data signal SBB to any one of positive edges and negative edges in the carrier signal SC, and sets a delay period for the variable delay circuit 312 at the timing at which a positive edge in the carrier signal SC passes through the variable delay circuit 312, according to the symbol value A in the data signal SBB assigned to the positive edge. Furthermore, the delay setting unit 314 sets a delay period for the variable delay circuit 312 at the timing at which a negative edge in the carrier signal SC passes through the variable delay circuit 312, according to the symbol value in the data signal SBB assigned to the negative edge.
| JP2006246266A | 2006-09-14 | |||
| JPH04366426A | 1992-12-18 | |||
| JPH08195039A | 1996-07-30 | |||
| JPH0676303A | 1994-03-18 | |||
| JP2010057173A | 2010-03-11 |
| WO2007005060A1 | 2007-01-11 |
Yusuke Murata
Tomoyuki Miki