变换域通信系统及其关键技术

Transform Domain Communication System and Its Key Techniques

变换域通信系统通过信道估计在变换域设计信号波形避开干扰,它没有采用载波调制,而是用一个类似噪声的基函数进行信息调制。论述了变换域通信系统的基本概念,对变换域通信系统的关键技术——环境干扰估计与检测、基函数序列与波形设计、调制解调与高速率数据传输进行了分析,最后指出了其应用前景。

The fundamental idea in transform domain communication system is to synthesize a smart adaptive waveform to avoid interference at the transmitter. Its communication waveform was designed in transform domain （frequency or scale） according to the estimation of electromagnetic, environment and no carrier modulation was employed, but a noise-like basis function was used to modulate the data. The basic theory of TDCS was introduced and the principal algorithms about TDCS were analyzed. The key technologies of TDCS--spectral estimation, basis function waveform design, high-speed modulation and demodulation were explored. Finally, its applications were presented in this paper.