Device and method for calculating Channel State Information

A device for calculating channel state information (CSI) in a dual-carrier modulation (DCM) system with two channels, comprising:

• an absolute value computing unit, for receiving one or more channel equalization so as to compute an absolute value of the channel equalization;
• a channel classifying unit, electrically connected to the absolute computing unit and electrically connected to two signal channels, for classifying the absolute values of the channel equalizations into plural groups, each group comprising two channel equalization values which indicates and separates the two signal channels;
• and
• an equalization value comparing unit, electrically connected to the signal channels, for comparing signal values between the two signal channels in each group,
• thereby obtaining the CSI of the DCM system after comparison.

A method for calculating channel state information (CSI) in a dual-carrier modulation (DCM) system with two channels, comprising steps of:

• receiving data transmitted by a transmission end in the DCM system;
• performing modulation at the transmission end;
• receiving the modulated signal by a receiving end in the DCM system;
• performing a channel equalization, wherein a known volume of signal is utilized to compare with an outputted signal volume on the channel of the DCM system, so as to obtain the equalization value of each channel;
• calculating an absolute value of each channel equalization in the system;
• performing channel classification by a channel classifying circuit, wherein the equalization values are divided into plural groups and each group has equalization absolute values of the two channels;
• performing a comparison operation between equalization absolute values of each channel;
• obtaining a CSI;
• classifying the signal received by the receiving end;
• dividing the received signal into plural groups according to the property of the DCM system;
• and
• calculating a demodulated value.