A communication and sensing integrated transmit precoding design method and device

Abstract

This invention provides a transmission precoding design method and apparatus integrating communication and sensing, relating to the field of communication technology. The method includes: modeling user channel vectors based on the Ricean channel model; constructing a communication signal model by combining the configuration parameters with the transmission precoding matrix to be optimized; discretizing the user's uncertain angle interval into multiple angle sampling points based on the communication signal model and calculating the received signal to construct a target echo signal model; deriving sensing performance indicators based on the target echo signal model and the mean square error of the multiple signal classification algorithm, and constructing a non-convex constraint optimization model; performing semi-definite relaxation on the non-convex constraint optimization model and transforming it for solution to obtain a semi-definite constraint matrix; performing eigenvalue decomposition on the semi-definite constraint matrix, and obtaining the optimized transmission precoding matrix by verifying the largest eigenvalue. This invention solves the problems of inaccurate known user angles and degraded target angle estimation accuracy.

Images