Quasi OTDM transmitting method and system

The disclosed QOTDM method and system comprise: connecting N continual signals with BHz bandwidth or corresponding sampling sequence into one continual signal to transmit in continual channel; converting the received signal on receive end into a composite zero-IF signal with orthogonal down-conversion and sampling digitalization, connecting frequency deviation by a carrier phase-locking loop; using frame-synchronization loop and adaptive channel balancer for high-precise sampling point synchronization and correction channel distortion; finally, recovering N signals. This invention has well performance for satellite communication system.