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ICIC Express Letters
Sparse code multiple access (SCMA) is a promising non-orthogonal multiple access scheme for future mobile communication. Combined with multiple input, multiple output (MIMO) technique, the spectrum efficiency of SCMA can be further improved. A joint factor graph method can be applied to the uplink MIMO-SCMA for more efficient signal detection. However, the corresponding decoding complexity of this system grows exponentially with the number of antennas and active users. To tackle this problem, adoi:10.24507/icicel.13.07.575 fatcat:sy265vmqwrdixlvuruakffwxim