Transmission Performance of Layered-symbol Iterative Interference Cancellation for Single-carrier MIMO Multiplexing

One of the promising techniques to achieve high-speed data transmission in limited bandwidth is multi-input multi-output (MIMO) multiplexing. In MIMO multiplexing, signal separation/detection is one of the most important signal processing parts, so that the signal separation/detection schemes have been vigorously researching. Recently, as a promising signal separation/detection scheme, frequency-domain iterative interference cancellation (FD-IIC) has been proposed. FD-IIC can achieve good transmission performance which is close to lower bound when QPSK is used. However, the accuracy of signal separation/detection significantly degrades in case of high data modulation. Therefore, in this paper, to improve the accuracy of signal separation/detection, we propose layered-symbol iterative interference cancellation (LSIC). We consider single-carrier (SC) MIMO multiplexing and the achievable frame error rate (FER) performances with LSIC are evaluated by computer simulation to show that LSIC can provide better FER performance than FD-IIC.