Adaptive transmission and receiving method and device in wireless communication system with multiple antennas

An adaptive communication device of a receiver for receiving data from a transmitter through a wireless channel in a wireless communication system, comprising:

• a receiver for receiving a signal from the transmitter through the wireless channel;
• a channel estimator for estimating a characteristic of the wireless channel using the signal received from the transmitter;
• an adaptive transmission parameter extractor for determining a parameter for adaptive transmit based on the signal received from the transmitter, the parameter being to be used for supporting determination of whether or not to use transmit mode by the transmitter;
• a transmitter for transmitting a feedback signal including the parameter to the transmitter through the wireless channel,
• wherein the characteristic of the wireless channel includes signal to noise ratio (SNR) information, and
• wherein the parameter includes channel coding information and space time block code (STBC) information.

An adaptive communication method of a receiver for receiving data from a transmitter through a wireless channel in a wireless communication system, comprising:

• receiving a signal from the transmitter through the wireless channel;
• estimating a characteristic of the wireless channel using the signal received from the transmitter;
• generating a first parameter including information to support determination of a transmit mode between a transmit diversity mode and a Spatial Multiplexing (SM) mode and a second parameter including information about a channel coding method and a modulation method;
• and
• transmitting the first parameter and the second parameter to the transmitter through the wireless channel.

An adaptive communication device for receiving data from a transmitter through a wireless channel in a wireless communication system, comprising:

• a receiver for receiving a signal from the transmitter through the wireless channel;
• a channel estimator for estimating a characteristic of the wireless channel using the signal received from the transmitter;
• an adaptive transmission parameter extractor for extracting a first parameter including information to support determination of a transmit mode between a transmit diversity mode and a Spatial Multiplexing (SM) mode and a second parameter including information about a channel coding method and a modulation method;
• and
• a transmitter for transmitting the first parameter and the second parameter to the transmitter through the wireless channel.