线路均衡器控制方法，积分电路，频移电路和传输装置。

Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device.

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与通常的直接序列扩颗通信方式(DS - SS)相比，移频键控多值传送扩颗通信方式(FSK - SS)具有传输效率高的特点。

FSK-SS communication system has higher transmission efficiency as compared with direct series spread spectrum (DS-SS) communication system.

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OFDM是一种无线传播环境下的高速传输技术，适合在多径传播和多普勒频移的无线信道中传输高速数据。

OFDM is a high transmission technology in the wireless propagation environment. It is fitted to transmit high-speed data in the wireless channel which has multi-path delay and Doppler frequency shift.

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