Method for estimating Ior/Ec in multiple input multiple output communication (MIMO) system and terminal device

The invention discloses a method for estimating Ior/Ec in multiple input multiple output communication (MIMO) system and terminal device. The invention relates to the technical field of communication, if an extra information interaction between a cell and a terminal device is not increased, a more accurate estimation Ior/Ec can be obtain. The method comprises the following steps: for a first pilot signal and a second pilot signal to be despread and descrambled, respectively obtaining a channel response and a symbol level noise of at least two antennas; respectively obtaining a first covariance of noise item of the first pilot signal, a second covariance of noise item of the second pilot signal and a cross covariance between the noise items of the first pilot signal and the second pilot signal; according to the channel response of at least two antennaes, the noise covariance, the first covariance, the second covariance and the cross covariance of the symbol level noise of at least two antennaes, calculating the ratio of energy and pilot frequency energy of signal of at least two antennas. The terminal device is mainly used for equalization in the MIMO system.