Abstract
In the ultra-wideband (UWB) communication system, Gaussian monocycle is the most frequently used due to its simplicity. However, in a Gaussian monocycle, the most of signal energy is concentrated in low frequency band, in which direct current components exist. Therefore, it cannot fully meet the U.S. Federal Communication Commission (FCC) on radiation template requirements. Meanwhile, in order to avoid the interference with other wireless systems, good pulse design is particularly important. Accordingly, several pulses were proposed, such as Scholtz’s pulse, Hermite pulse, and spectrum shifted Gaussian waveforms (SSGW) pulse. However, it was shown that coefficient adjustment of SSGW pulse requires too many computations or iterations. In this paper, in order to overcome this drawback, random selection (RS) and Least Square Error (LSE) algorithms are introduced to the SSGW pulse design. Correspondingly, an improved SSGW waveform design is presented. Our analysis and results show that the improved approach has significant flexibility in designing and therefore it can meet the requirements of FCC spectrum mask better.
Z. Liang—This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 61271262 and 61572083, in part by the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2017JM6099, and in part by the Fundamental Research Funds for the Central University under Grant 310824171004.
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Liu, D., Liang, Z., Ma, L., Song, H. (2018). Improved Ultra-wideband Pulse Shaping Technique Based on Spectrum Shifted Gaussian Waveforms. In: Li, B., Shu, L., Zeng, D. (eds) Communications and Networking. ChinaCom 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 236. Springer, Cham. https://doi.org/10.1007/978-3-319-78130-3_15
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