SINR analysis for MIMO-SC-FDMA systems

Single carrier frequency division multiple access (SC-FDMA) has been adopted as uplink multiple access scheme for 3GPP LTE as it combines the advantages of orthogonal frequency division multiple access (OFDMA) and the low envelope variation properties of single carrier (SC) transmission. Moreover, the classical transmit antenna diversity technique as space-time block code (STBC) and space-frequency block code (SFBC) can improve the uplink performance combination with SC-FDMA schemes. In this paper, a signal-to-interference-plus-noise ratio (SINR) performance analysis method of SC-FDMA is proposed for STBC and SFBC schemes, respectively. The closed-form SINR expressions based on the modified SC-preserved implementation structure and MMSE equalization for receivers are derived by channel frequency response and noise variance, considering inter-symbol interference. Moreover, it can be easily extended to multi-receive antennas. By simulation results it is shown that with proposed equivalent SINR, the BLock Error Rate (BLER) performance of MIMO-SC-FDMA over slow fading channel is well matched with that over AWGN channel.