Title :
Pilot-channel assisted modulation for pulse-based ultra-wideband wireless communications
Author :
Chu, Xiaoli ; Murch, Ross D.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
We propose a pilot-channel assisted modulation (PCAM) for pulse-based ultra-wideband systems that require accurate channel estimation for RAKE combining. The pilot channel is constructed with pulses that are orthogonal to the data-bearing pulses and each pilot pulse is transmitted together with a data pulse. PCAM parameters are designed to optimize the channel estimation and data detection performance jointly. Simulation results show that PCAM is able to provide desirable performance under channel time-variations and multi-user interference, without sacrificing the data rate.
Keywords :
channel estimation; optimisation; pulse amplitude modulation; radiofrequency interference; time-varying channels; ultra wideband communication; RAKE combining; bipolar pulse amplitude modulation; channel estimation optimization; channel time-variations; data detection performance optimization; data pulse; multi-user interference; pilot pulse; pilot-channel assisted modulation; pulse-based ultra-wideband wireless communications; Amplitude modulation; Channel estimation; Correlators; Design optimization; Diversity reception; Interference; Pulse amplifiers; Pulse modulation; Ultra wideband technology; Wireless communication;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494902
