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频谱资源短缺是下一代高速无线通信面临的严峻问题,要求未来无线通信具有频谱动态访问能力。SMSE(频谱编码、频谱调制)框架把OFDM、MC-CDMA、TDCS等具有特定频谱结构的信号的分析合成纳入了统一的数学框架之内,在变换域合成了具有自适应性及多样性的信号波形。文中介绍了SMSE的原理及设计参数,给出了TDCS的基本调制波形的参数取值;仿真表明,SMSE框是一种在变换域合成特定频谱结构波形的有效方法。
The shortage of spectrum resources is a serious problem for the next generation of high-speed wireless communications and requires future wireless communication with spectrum dynamic access capability. The SMSE (Spectrum Coding, Spectrum Modulation) framework incorporates the analysis and synthesis of signals with specific spectral structures such as OFDM, MC-CDMA and TDCS into a unified mathematical framework and synthesizes signals with adaptive and diversity in the transform domain Waveform. In this paper, the principle and design parameters of SMSE are introduced, and the parameters of the basic modulation waveform of TDCS are given. The simulation shows that SMSE box is an effective method to synthesize the waveform of a specific spectral structure in the transform domain.