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提出一种新的超宽带脉冲波形的设计方法,通过在频率域进行多点采样,将超宽带信号设计成适合多址接入的ns级极窄脉冲,同时符合FCC频谱模板对功率的限制.能充分利用频谱模板,并给出脉冲波形具体数学解析式,修改频域采样点数目及幅度值参数能够进一步提高频谱利用率.减少了与其他无线窄带系统的相互干扰,提高了UWB通信系统的性能.方法灵活有效,适用于不同的频谱模板.在理论分析的基础上对方法进行了仿真,仿真结果验证了该方法的有效性.
A new design method of UWB pulse waveform is proposed. The UWB signal is designed to be very narrow ns pulse for multiple access by performing multi-point sampling in the frequency domain and meets the power limitation of the FCC spectrum mask. Can make full use of the spectrum template and gives the specific mathematical expression of the pulse waveform, and modify the number of sampling points in the frequency domain and the amplitude value parameter to further improve the spectrum utilization rate, reduce mutual interference with other wireless narrowband systems, and improve the UWB communication system The method is flexible and effective and can be applied to different spectrum templates.The method is simulated based on the theoretical analysis and the simulation results verify the effectiveness of the proposed method.