TRANSMISSION/RECEPTION APPARATUS AND METHOD FOR IMPROVING THROUGHPUT IN A MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEM BY SELECTING AN MCS(MODULATION AND CODING SCHEME) LEVEL

摘要

PURPOSE: A transmission/reception apparatus and method for improving throughput in a multi-input multi-output communication system are provided to improve the potential throughput of an SIC receiver by controlling a transceiving unit.;CONSTITUTION: A transmitter includes an MCS(Modulation and Coding Scheme) selector(101), a first CRC(Cyclic Redundancy Check) error adder(103), a first FFC(Forward Error Correction) encoder(105), a first modulator(107), a resource allocator(109), a first IFFT(Inverse Fast Fourier Transform) unit(111), an S/P(Serial-to-Parallel) converter(113), a second CRC error adder(115), a third CRC error adder(117), a second FEC encoder(119), a third FEC encoder(121), a first rate matcher(123), a second rate matcher(125), a second modulator(127), a third modulator(129), a precoder(131), and a second IFFT unit(133). Upon receipt of CQI feedback information(100) of each user, the MCS selector determines an MCS level for each user's transport block based on the received CQI feedback information 100, and then outputs the MCS level to the first CRC error adder, an FEC encoding block, a rate-matching block, and a modulation block. The first CRC error adder generates a control signal to be transmitted to a receiver by integrating the MCS level of each user's transport block and each user's control information, adds to the control signal a CRC code for detecting an error occurring in a transmission process, and outputs the CRC-added control signal to the first FEC encoder. The first FEC encoder receives a signal output from the first CRC error adder, performs thereon FEC encoding for correcting an error occurring due to noise, using an FEC code, and outputs the FEC-encoded signal to the first modulator. There is no limit on the type of the FEC code. The first modulator receives a signal output from the first FEC encoder, maps the received signal to a signal constellation point, and outputs the mapped signal to the resource allocator.;COPYRIGHT KIPO 2011