超宽带组合脉冲优化设计及其性能分析

研究了高斯导脉冲优化组合的超宽带(UWB)脉冲设计方法。利用微分因子的能量搬移作用和脉冲形成因子的频谱扩展作用,构造了优化的高斯导脉冲,结合室内室外的辐射掩蔽标准,通过约束条件下的最小均方误差算法导出权重因子的最优解,设计了一种能在全频段同时满足室外和室内两种传输环境的通用性UWB组合脉冲。仿真结果表明,这种组合脉冲不仅具有良好的逼近能力,而且具有多用户干扰环境下的最佳误比特率性能。该设计方法对给定频谱下的UWB合理化设计具有重要的参考价值。

Optimal design of ultra wideband combined pulse and performance analysis

A design method for the Ultra Wideband ( UWB) pulse with the optimal combination of differential Gaussian pulses is investigated. A series of the optimal simple order differential Gaussian pulses are constructed using energy shift action of the differential factor and the spectral spreading effect of the pulse shaping factor. According to indoor and outdoor radiation mask standard,an optimal solution of the weight factor is derived by the restrained minimum mean square error algorithm; and a universal UWB combined pulse compatible with the indoor and outdoor transmission environments at whole frequency band is designed. The simulation results indicate that the designed combined pulse is characterized by good capability of approach to the Federal Communication Commission radiation mask standard and least bit error rate under multiuser interference environment. The proposed design method is important to the rational design of UWB pulse with a given frequency spectrum.