Transmitting and receiving apparatus and method for optimizing performance of adaptive modulation and coding in a multiple input and multiple output antenna communication system

A receiver of a multiple input and multiple output antenna (MIMO) system using adaptive modulation and coding (AMC), the receiver comprising:

• a MIMO channel estimator for estimating a MIMO channel value using one of a pilot channel and a traffic channel;
• a SIC (successive interference cancellation)—type detector for receiving a data signal and control information, the control information including an ordering policy information and an AMC level information, from a transmitter through a receive (Rx) antenna, transmitting the data signal and the control signal, determining an SIC ordering policy according to the ordering policy information, and determining a modulation scheme of the received data signal according to the AMC level information;
• a demultiplexer for receiving the data signal, the ordering policy information, and the AMC level information from the SIC-type detector, transmitting the data signal in an interval for data signal transmission;
• transmitting the ordering policy information and the AMC level information in an interval for control information transmission, and feeding back the AMC level information to the SIC-type detector;
• and
• a channel quality information (CQI) generator for generating a MIMO equivalent channel based on the ordering policy using the estimated MIMO channel value and the ordering policy information, and transmitting the MIMO equivalent channel to the transmitter.

A transmitting method of a multiple input and multiple output antenna (MIMO) system using adaptive modulation and coding (AMC), the transmitting method comprising the steps of:

• determining AMC levels of transmit (Tx) antennas using a MIMO equivalent channel information fed back from a receiver, a preset maximum modulation order, and a preset total transmission power;
• generating AMC level information from the determined AMC levels;
• determining an SIC (successive interference cancellation) ordering policy of the receiver using the MIMO equivalent channel information, the preset maximum modulation order, and the preset total transmission power;
• generating an ordering policy information using the SIC ordering policy;
• selecting data signals at a data signal transmission interval;
• and
• selecting the ordering policy information and the AMC level information at a control information transmission interval.

A receiving method of a multiple input and multiple output antenna (MIMO) system using adaptive modulation and coding (AMC), the receiving method comprising the steps of:

• estimating a MIMO channel value using one of a pilot channel and a traffic channel;
• receiving data signals and control information, the control information including an ordering policy information and an AMC level information, from a transmitter;
• determining an SIC ordering policy according to the ordering policy information;
• determining a modulation scheme of the received data signal according to the AMC level information;
• receiving the data signals at a data signal transmission interval;
• receiving the ordering policy information and the AMC level information at a control information transmission interval;
• generating a MIMO equivalent channel based on the ordering policy using the MIMO channel value and the ordering policy information;
• and
• feeding back the MIMO equivalent channel information to the transmitter.