The invention discloses a
pilot frequency scheduling method based on a cross
contamination in distributed
MIMO system. The method comprises the following steps: 1, computing the cross
contamination index among user antennas according to large-scale
fading, marking a user antenna set accomplishing the
pilot frequency distribution as U, marking the antenna user set not accomplishing the
pilot frequency distribution as a formula as shown in description, and marking the pilot frequency distribution condition as {sk}, wherein sk represents a pilot frequency sequence used by the k-th antenna; 2, selecting the antenna with the maximum cross
contamination index among all user antennas from the formula as shown in description, and marking as k0, distributing an orthogonal pilot frequency sequence to the k0, updating the set {sk}, U and formula as shown in description until accomplishing the distribution of all orthogonal pilot frequency sequences; 3, continuously selecting the antenna with themaximum cross
contamination index among all user antennas from the formula as shown in description, and marking as k0, computing the cross
contamination index between the antennal sets using the samepilot frequency in the k0 and the U,
multiplexing the pilot frequency sequence of the antenna set with the minimum cross
contamination index, updating the set {sk}, U and formula as shown in description; and 4, checking whether the formula as shown in description is an empty set, representing that all antennas has accomplished the pilot frequency scheduling if the formula as shown in description is the empty set, or returning to step 3.