说明：  协作多点传输（CoMP）技术中联合处理（Joint Processing, CoMP-JP）和协同波束赋形（Coordinated Beamforming, CoMP-CB）两方案中的迫零（Zero-forcing）预编码的基本原理和实现，并进行了仿真分析
(Coordinated multipoint transmission (CoMP) technology combined treatment (Joint Processing, CoMP-JP) and collaborative beam forming (offset from Coordinated Beamforming CoMP-CB) the zero forcing two programs (Zero-forcing) the basic principle of pre-encoded and achieve and simulation analysis)