Title :
A Novel Algorithm for Designing Adaptive DS-UWB Pulses Using Hermite-Gaussian Orthonormal Expansion
Author :
Yang, Rumin ; Yu, Chengbo ; Zhou, Zheng
Author_Institution :
Lab. of Wireless Network, Beijing Univ. of Posts & Telecommun.
Abstract :
An adaptive pulse in DS-UWB systems is characterized as being able to form nulls around some frequencies as a way to suppress its interference to licensed narrow-band users. This paper proposes an orthonormal expansion method in designing adaptive pulses, using Hermite-Gaussian functions as the orthonormal basis. An algorithm is devised and a case study provided, which shows, while satisfying the stringent FCC outdoor emission mask, the adaptive pulse designed by the algorithm can form a null as deep as 100 dB. Comparison with the matured seventh Gaussian derivative proves that the pulse also has greater spectrum utilization rate
Keywords :
Gaussian processes; interference suppression; radiofrequency interference; spread spectrum communication; ultra wideband communication; Gaussian derivative; Hermite-Gaussian orthonormal expansion; adaptive DS-UWB pulses; interference suppression; spectrum utilization; Algorithm design and analysis; Eigenvalues and eigenfunctions; FCC; Frequency; Interference; Narrowband; Pulse shaping methods; Sampling methods; Shape; Wireless networks;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.116
