| 摘要 |
The present invention relates to a cooperative jammer apparatus for joint transmission. The device receives data required to calculate a secrecy rate from a transmission device, a receiving device, and a bugging device, configures initial values for a time switching ratio and a beam forming covariance matrix, increases the time switching ratio by a predefined scale, calculates the secrecy rate expressed by a concave function through a miniorization-maximization (MM) algorithm, examines results by an optimum beam forming covariance matrix and the optimum time switching ratio, performs rank-relaxation for an optimum beam forming covariance matrix, and finally calculates an optimum beam forming vector. |
