| 摘要 |
<p>A base station device, a method thereof and a communication system thereof are disclosed. The base station comprises: a covariance matrix obtaining unit that forms a covariance matrix of an interference vector and a noise vector from received signals from multiple user equipments; a ratio calculation and comparison unit that calculates a relative ratio between the interference and the noise in the received signals based on the covariance matrix and compares the ratio with a predetermined threshold; an adjusting unit that reduces values of non-diagonal elements in the covariance matrix when the ratio is less than the predetermined threshold; an equalizer unit that performs equalization based on the covariance matrix by utilizing an Interference Rejection Combining algorithm when the ratio is greater than or equal to the predetermined threshold, and equalizes the received signals based on the adjusted covariance matrix by utilizing a Minimum Mean Square Error algorithm when the ratio is less than the predetermined threshold. By using the uniform receiver architecture, the advantages of the two algorithms are achieved in a simple structure, and further, its performance is superior to a MMSE receiver and an IRC receiver.</p> |
