Multi-dimensional optimization of beams in atmospheric laser communication system 并列题名:Multi-dimensional optimization of beams in atmospheric laser communication system Signal optimization design for OFDM communication systems 并列题名:Signal optimization design for OFDM communication systems Pplications of optimization methods in communication systems Uav trajectory optimization for wireless relay communications system Polarization optics in optical fiber communication systems Simulation and implementation of spread spectrum communication system 并列题名:Polarization optics in optical fiber communication systems