Information Security Technology of Wireless Communication Physical Layer Based on Airspace Technology

Due to the characteristics of broadcast function wireless communication network, problem information security has become very serious. And because traditional upper-layer encryption technology is accompanied by advancement computer and eavesdropping technology, it more far from being able meet needs modern society for security. The multi-antenna beamforming in airspace a that can effectively increase strength legal signal suppress signal. Therefore, most important physical layer our country deserves attention. this article aims study based on technology. Based analysis basic theory security, current status research artificial noise auxiliary promoted applied identification. Taking speed maximizing safe frequency spectrum as design goal, an algorithm joint optimization beam proposed. simulation results show improve stability system, also solve problem.