作者: In-Soon Park , Young-Ho Jung , Inhyoung Min , Y.H. Lee
DOI: 10.1109/VETECS.2004.1388957
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摘要: An adaptive subchannel allocation and modulation scheme is developed for multiuser multiple-input multiple-output (MIMO)/orthogonal frequency division multiple access (OFDMA) systems through some modification of the approach OFDMA systems. In MIMO/OFDMA system, there are SDMA subchannels, in which each user occupies a single-user MIMO subchannel, OFDM subcarrier. optimal procedure allocating subchannels to users loading bits formulated as an integer programming (IP) problem. Then, suboptimal algorithm that separately performs bit proposed. Computer simulation results indicate performance reasonably close IP.