| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for deciding a channel characteristic of a channel 'CHANNEL' between a transmitter TX and a receiver RX. SOLUTION: A cosine modulation filter bank DWMT MOD of the receiver TX modulates the waveform of a prescribed periodic signal for a pulse amplitude modulation symbol with a transmission pulse amplitude modulation symbol, the modulated waveform is sent via the channel CHANNEL. A cosine modulation filter bank DWMT MOD of the transmitter TX demodulates the waveform from the received pulse amplitude modulation symbol, combining of a couple of the received pulse amplitude modulation symbols forms the received orthogonal amplitude modulation symbol, which is divided by a prescribed transmitted pulse amplitude modulation symbol which is regarded as a form in pair with the transmitted orthogonal amplitude modulation symbol. Thus, a sample of the channel characteristic is generated. |
