METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR PERFORMING SAME
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United States of America Patent
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Mar 9, 2016
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Mar 9, 2015
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Abstract
A method for receiving a signal by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA) according to an embodiment of the present invention comprises the steps of: receiving a NOMA signal in which signals for each of the first terminal and a second terminal belonging to the same NOMA pair are superposed; and demodulating the signal for the first terminal from the NOMA signal, using at least a part of a NOMA constellation which is configured by considering downlink transmission power and a modulation order for the second terminal, wherein only a bit corresponding to one digit is differently configured between the bit sequences of NOMA constellation points adjacent to each other in the NOMA constellation, and the complex coordinates (I, Q) of the NOMA constellation points are determined on the basis of a combination of downlink transmission power for the first terminal and the downlink transmission power for the second terminal.
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