Because of limited frequency band of channel, spread spectrum and MFSK modulations can not resolve that high speed transmission is in contradiction with limited frequency band.
当进行高速水下通信时，由于水下信道的频带有限，扩频和MFSK调制方式无法解决高速率信息传输和可利用信道频带窄的矛盾。
The system realization for the transmission of multiplexed testing signals using spread spectrum technology based on DSP is discussed. The circuit system is devised.
分析了多路测量信号扩频传输系统的DSP系统实现的整体方案，并实现电路的设计。
FSK-SS communication system has higher transmission efficiency as compared with direct series spread spectrum (DS-SS) communication system.
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。
The design select the chirp as the spread spectrum technology, which resolve the problem of the signal transmission in such adverse communication circumstances as 10KV power line;
本设计选择采用的扩频技术为线性调频技术，它解决了信号在10KV电力线这样恶劣的通信环境中的传输问题；
Hybrid spread spectrum, rake and multiple data compressing technology are used to realize air to ground mass high-speed, anti-jamming multiple data transmission.
采用复合编码扩频技术、隐分集技术以及多媒体数据压缩技术，实现了空地大容量高速、抗干扰多媒体数据传输。
Hybrid spread spectrum, rake and multiple data compressing technology are used to realize air to ground mass high-speed, anti-jamming multiple data transmission.
采用复合编码扩频技术、隐分集技术以及多媒体数据压缩技术，实现了空地大容量高速、抗干扰多媒体数据传输。
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