Title :
In-band interference power caused by different kinds of UWB signals at UMTS/WCDMA frequency bands
Author :
Hämäläinen, Matti ; Hovinen, Vikko ; Iinatti, Jari ; Latva-aho, Matti
Author_Institution :
Centre for Wireless Commun., Oulu Univ., Finland
Abstract :
This paper studies in-band interference caused by different kinds of ultra wideband signals in UMTS frequency bands as a function of UWB pulse width. UWB frequency spectra are produced by using several types of narrow pulse waveforms. Due to the extremely wide bandwidth these signals will spread over the frequency bands allocated to other RF-systems. Study revealed that one can reduce interfering UWB power by using different waveforms and pulse widths to avoid UMTS frequencies without any additional filtering. The simulations did not make a significant difference between time hopping and direct sequence concepts when interference was calculated at the UMTS bands
Keywords :
broadband networks; cellular radio; code division multiple access; interference suppression; radiofrequency interference; RF-systems; UMTS; UMTS/WCDMA frequency bands; UWB signals; W-CDMA; direct sequence; frequency spectra; in-band interference power; narrow pulse waveforms; pulse width; time hopping; 3G mobile communication; Bandwidth; Frequency; Indoor communication; Interference; Multiaccess communication; Pulse generation; Signal generators; Space vector pulse width modulation; Ultra wideband technology;
Conference_Titel :
Radio and Wireless Conference, 2001. RAWCON 2001. IEEE
Conference_Location :
Waltham, MA
Print_ISBN :
0-7803-7189-5
DOI :
10.1109/RAWCON.2001.947536
