Signal processing method and system at receiving end of MIMO system

Abstract

The application relates to a receiving end signal processing method and system of a MIMO system, which comprises the following steps: acquiring signals transmitted by each transmitting antenna and received by each receiving antenna, wherein the signal transmitted by each transmitting antenna is a signal after constellation modulation, SFBC encoding and OFDM modulation of transmission data; performing OFDM demodulation on the signal received by each receiving antenna to obtain the demodulated signal of the receiving antenna, which comprises demodulated signals on different subcarriers; reorganizing the demodulated signals of each receiving antenna into a time-frequency resource matrix; determining a receiving signal matrix according to the time-frequency resource matrix, determining an estimated value of a transmitting symbol matrix according to the receiving signal matrix and a pre-determined decoding matrix; determining an estimated value of each constellation symbol according to the estimated value of the transmitting symbol matrix; and performing constellation demodulation on the estimated value of each constellation symbol to obtain an estimated value of the transmission data.

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