Title :
Spectrum control by means of the TH code in UWB systems
Author :
Piazzo, L. ; Romme, J.
Author_Institution :
Dept. of INFOCOM, La Sapienza Univ., Rome, Italy
Abstract :
An important class of ultra-wideband (UWB) systems employs a time-hopping (TH) code to construct the transmitted signal. Impulse radio (IR) is the best known example. For these systems the problem of controlling the spectrum shape by means of the TH code is addressed. Several code construction methods that allow placing a notch or a zero in a selected frequency is introduced. Simulations results are presented that confirm our analysis and allow to assess the extent to which the spectrum can be controlled by means of the TH code.
Keywords :
amplitude modulation; broadband networks; codes; radio networks; signal processing; UWB systems; code construction method; impulse radio; spectrum control; time-hopping code; transmitted signal; ultrawideband systems; Amplitude modulation; Analytical models; Communication system control; Control systems; Frequency; Interference; Narrowband; Pulse modulation; Shape control; Ultra wideband technology;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207102
