Title :
Design of Blind Adaptive MOE receiver for Time-Hopping UWB System over Multipath Fading Channel
Author_Institution :
Da Yeh Univ., Changhua
Abstract :
This paper deals with the design of blind adaptive mobile receiver for time-hopping (TH) antipodal pulse amplitude modulation (PAM) Ultra wideband (UWB) impulse radio (IR) system. We first employ constrained optimization technique to design a batch mode blind mobile receiver. To reduce the computational complexity, we propose a blind adaptive receiver that is based on the criterion of maximizing the receiver´s minimum possible output energy. The algorithm jointly and iteratively optimizes the weight vector and channel impulse response to improve system performance. Simulation results show that the proposed adaptive receiver converges to the optimum batch mode receiver. Moreover, the algorithm is shown to be robust to MUI and near-far problems.
Keywords :
fading channels; mobile radio; multipath channels; pulse amplitude modulation; radio receivers; radiofrequency interference; ultra wideband communication; adaptive receiver; antipodal pulse amplitude modulation; batch mode blind mobile receiver; blind adaptive MOE receiver; multipath fading channel; multiuser interference; time-hopping UWB system; ultrawideband impulse radio system; weight vector; Amplitude modulation; Computational complexity; Constraint optimization; Design optimization; Fading; Iterative algorithms; Pulse modulation; Receivers; System performance; Ultra wideband technology; Blind; Minimum-output-energy (MOE); Multi-user interference (MUI); Time-hopping (TH); Ultrawideband (UWB);
Conference_Titel :
Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0521-3
Electronic_ISBN :
978-1-4244-0521-3
DOI :
10.1109/ICUWB.2007.4381007