目前,战术通信系统带宽窄、速率低、机动性差,同时多径传播引起选择性衰落,产生严重干扰,导致系统性能下降,已经不能满足日益增长的高速数据业务需求。针对这些问题,提出多天线多载波(MIMO+OFDM)技术体制,介绍其发展现状、基本原理、关键技术以及主要优势、特点和存在问题,提出更高带宽、更高速率、更高移动性和更高频段,将成为未来发展趋势和重点应用研究方向,这也将极大推动战术通信跨越式发展。
At present, the tactical communication system, for its narrow bandwidth, low speed and poor mobility, including, selective fading caused by multipath propagation, and serious interference, which would result in the performance degradation, could not meet the growing demand for high speed data service. To solve these problems, the multi-antenna multi-carrier (MIMO+OFDM) technical system is proposed, its development status, basic principle and key technology decribed, and main advantages, characteristics and existing problems discussed, and the system with even higher bandwidth, higher speed, higher mobility and higher frequency would become the trend of development and the direction of key application research. And all these would greatly promote the great-leap-forward development of tactical communication.