Title :
A pulse shaping method for UWB avoiding the frequency coexistence interference with WLAN
Author :
He, Pengfei ; Lu, Yinghua ; Zhang, Hongxin ; Lu, Jiangang
Author_Institution :
Inst. of Telecommun.&Network Technol., Beijing Univ. of Posts&Telecommun.
Abstract :
The pulse waveform design is an important factor that is related to the system performance. A new method to generate orthogonal UWB shaping pulses is proposed based on the eigenvectors of Hermitian matrix and Gram-Schmidt process, which have no interference to IEEE 802.11a WLAN systems when they coexist with each other, and the desired shaping pulses are given. The simulation results show that the power spectral density distribution of the short time pulses generated with this method is fit to the constraint of FCC spectral mask of UWB and have high spectrum efficiency. When used in multiple access schemes, this method can not only reduce the interference of multi-users, but also avoid the frequency coexistence interference between UWB communication systems and WLAN systems
Keywords :
Hermitian matrices; eigenvalues and eigenfunctions; multi-access systems; pulse shaping; radiofrequency interference; wireless LAN; Gram-Schmidt process; Hermitian matrix; IEEE 802.11a; UWB; WLAN; eigenvectors; frequency coexistence interference; multiple access schemes; power spectral density distribution; pulse shaping method; pulse waveform design; Power Spectral Density (PSD); Ultra WideBand (UWB); frequency coexistence interference; pulse shaping;
Conference_Titel :
Mobile Technology, Applications and Systems, 2005 2nd International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
981-05-4573-8
DOI :
10.1109/MTAS.2005.243888
