Patent ID: 9025683
Filing Date: 2015-05-05
Classification: H04B,H04J,H04L

Abstract:
1. A precoding method, comprising: performing offset modulation for a transmitting signal; calculating a precoding matrix according to the offset-modulated transmitting signal and a receiver decision signal, wherein the decision signal is a product of a receiving signal real-part vector and a multiplying factor, and the receiving signal is obtained by adding an additive noise vector of a channel to a product of multiplying the transmitting signal by both the precoding matrix and a channel matrix, wherein the precoding matrix is obtained according to a mean square error between the transmitting signal and the decision signal, and wherein the precoding matrix is used for performing linear precoding for the transmitting signal; and performing precoding for the transmitting signal according to the precoding matrix; wherein before the calculating the precoding matrix, according to the offset-modulated transmitting signal and the receiver decision signal, the method further comprises: obtaining a channel matrix H between a transmitter and a receiver, an additive noise vector n of a channel, and a noise variance of the channel through channel estimation; obtaining a pseudocovariance σ obtaining a transmitting power constraint E[∥Ps∥