System for interference cancellation and method thereof

A method for interference cancellation, executed by a system for interference cancellation, comprising:

• calculating a delay time of an ineffective signal by a channel estimating and equalizing device;
• receiving a first RF signal and transferring the first RF signal to a first baseband signal by the receiver, wherein the first baseband signal comprises an effective signal and the ineffective signal, the ineffective signal is generated by inputting a second RF signal to the first channel, and the second RF signal is generated by up converting a second baseband signal;
• and
• subtracting a third baseband signal from the first baseband signal to reduce the ineffective signal in the first baseband signal by the channel estimating and equalizing device, wherein the third baseband signal is generated by inputting the second baseband signal to the second channel

A wireless communication device, having a system for interference cancellation, comprising:

• a receiver, receiving a first RF signal and transferring the first RF signal to a first baseband signal, wherein the first baseband signal comprises an effective signal and an ineffective signal;
• a transmitter, transferring a second baseband signal to a second RF signal and transmitting the second RF signal, wherein the ineffective signal is generated by inputting the second RF signal to a first channel;
• and
• a channel estimating and equalizing device, subtracting a third baseband signal from the first baseband signal to reduce the ineffective signal in the first baseband signal, wherein the channel estimating and equalizing device generates and adjusts a second channel according to the first channel, and the third baseband signal is generated by inputting the second baseband signal to the second channel;
• wherein the channel estimating and equalizing device calculates a delay time.