Title :
Optimal pilot waveform assisted modulation for ultra-wideband communications
Author :
Yang, Liuqing ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electron. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
Performance of ultra-wideband (UWB) communication systems can be enhanced by collecting multipath diversity gains, once the channels are acquired at the receiver. In this paper, we develop a novel pilot waveform assisted modulation (PWAM) scheme that is tailored for power-limited UWB communications, and can be implemented in analog form. The PWAM parameters are designed to jointly optimize performance and information rate. The resulting transmitter design also minimizes the mean square error (MSE) of channel estimation and thereby achieves the Cramer-Rao lower bound (CRLB).
Keywords :
broadband networks; channel estimation; diversity reception; mean square error methods; modulation; multipath channels; optimisation; radio transmitters; CRLB; Cramer-Rao lower bound; ES-PWAM; PAM; PPM; PWAM; information rate optimization; mean-square error; multipath diversity gains; optimal pilot waveform assisted modulation; performance optimization; power limited UWB communications; pulse amplitude modulation; pulse position modulation; ultrawideband communications; Amplitude modulation; Correlators; Decoding; Fading; Fingers; Multipath channels; Pulse modulation; Pulse shaping methods; Ultra wideband communication; Ultra wideband technology;
Conference_Titel :
Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7576-9
DOI :
10.1109/ACSSC.2002.1197277
