INFORMATION TRANSMISSION METHOD, DEVICE AND COMMUNICATION SYSTEM

摘要

Disclosed are an information transmission method, device and communication system. The information transmission method comprises: an eNodeB receives a CQI fed back from a user equipment, wherein the CQI is generated by the user equipment according to an Orthogonal Frequency Division Multiplex (OFDM) signal-to-interference plus noise ratio (SINR); then calculates a Non-Orthogonal Multiple Access (NOMA) SINR according to the CQI, and looks up a MCS table supporting NOMA according to the NOMA SINR, and selects an appropriate modulation mode and code rate according to the lookup result and modulates the data to be sent; and sends the modulated data to the user equipment. Thereby the condition that the NOMA SINR exceeds the range of the MCS table will not appear, and the block error rate on a low SINR condition can be reduced with an improved NOMA system throughput.