In this paper, a low-complexity approach is proposed for the generation of power efficient impulse radio ultra-wide band (IR-UWB) waveforms. The proposed approach relies on the optimization of the pulse width to achieve the highest power efficiency while maintaining FCC-compliant pulse shapes. Analytical expressions are developed for the power efficiency of widely adopted UWB waveforms, namely Gaussian and sech basis waveforms. The proposed approach is verified analytically and compared to results obtained through other approaches in the literature. It is shown that using as low as a single first order derivative Gaussian or sech basis waveform, with optimized pulse width can result in power efficiency as high as 85%, an efficiency that is achieved by other approaches using linear combinations of as much as 33 basis waveforms. This represents the low-complexity advantage of the proposed approach, which makes it more practical for implementation.

在本文中，提出了一种低复杂度的方法来生成功率高效的脉冲无线电超宽带 (IR-UWB) 波形。所提出的方法依赖于脉冲宽度的优化来实现最高的功率效率，同时保持符合 FCC 的脉冲形状。为广泛采用的 UWB 波形（即高斯和 sech 基波形）的功率效率开发了分析表达式。所提出的方法经过分析验证，并与通过文献中的其他方法获得的结果进行比较。结果表明，使用低至单个一阶导数高斯或 sech 基波形，以及优化的脉冲宽度，可实现高达 85% 的功率效率，这是通过使用多达 33 个线性组合的其他方法实现的效率基础波形。