Title :
Optimization of Single-Carrier UWB Transmissions for Narrowband Interference Avoidance
Author_Institution :
Toshiba Telecommun. Res. Lab., Bristol
Abstract :
Spectral shaping for narrowband interference avoidance is an important part of cognitive radio, and is essential in ultra wideband (UWB) communication systems. In this paper, a novel interference avoidance algorithm is proposed for use in next-generation single-carrier UWB block transmission systems. The proposed technique provides a means of implementing interference avoidance in a dynamic manner with the added expense of an increase in transmitter complexity. When constant modulus constellations are employed, the receiver does not need any additional information about the transmitted signal in order to recover the transmitted message. Even with this "blind" detection strategy, the proposed method performs within 1-2 dB of a system where interference avoidance is not required or implemented.
Keywords :
cognitive radio; interference suppression; ultra wideband communication; blind detection; cognitive radio; narrowband interference avoidance; spectral shaping; ultra wideband transmissions; Cognitive radio; Communications Society; Interference; Licenses; Manufacturing; Narrowband; OFDM; Power control; Radio transmitters; Ultra wideband technology;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.304