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正交脉冲的产生是超宽带无线应用中的关键技术,采用Hermite矩阵特征向量分解方法,提出了一种基于Polycycle信号的UWB正交脉冲序列设计方法.该方法产生的正交成形脉冲功率谱密度分布符合FCC关于室内和室外UWB应用的辐射限制,有较高的频谱利用率,脉冲函数自相关性强,互相关性弱,利于多址检测.最后,分析了2PPM-THMA UWB系统的传输性能,仿真结果表明正交成形脉冲抗多用户干扰能力优于Scholtz脉冲.
Orthogonal pulse generation is the key technology in UWB wireless applications. Based on the method of Hermite matrix eigenvector decomposition, a UWB orthogonal pulse sequence design method based on Polycycle signal is proposed. The orthogonally shaped pulse power spectral density The distribution is in line with the FCC emission limits for indoor and outdoor UWB applications, with high spectral efficiency, strong auto-correlation of pulse function and weak cross-correlation, which facilitates multi-address detection.Finally, the transmission performance of 2PPM-THMA UWB system The simulation results show that the orthogonally shaped pulse is better than the Scholtz pulse in suppressing multi-user interference.