Title :
Novel iterative receivers for TR UWB systems
Author :
Chen, Yunfei ; Beaulieu, Norman C. ; Wang, Shuyi
Author_Institution :
Sch. of Eng., Univ. of Warwick, Coventry
fDate :
4/1/2009 12:00:00 AM
Abstract :
Two novel receivers for transmitted-reference ultrawide bandwidth wireless systems are proposed. The new receivers are derived by using iterative algorithms to implement the channel template estimators employed in previous receivers. While the new receiver structures are simple, simulation results confirm their superiority over previous receivers. The performances of the new receivers can be further improved by optimizing the energy allocation between reference symbols and data symbols within one data packet and by optimizing the number of samples used in correlation. Numerical examples show that the optimization can provide performance gains of up to 4 dB in some cases.
Keywords :
channel estimation; iterative methods; radio receivers; ultra wideband communication; TR UWB systems; channel template estimator; data packet; data symbols; energy allocation; iterative receivers; reference symbols; transmitted-reference ultrawide bandwidth wireless systems; Bandwidth; Delay; Energy consumption; Fading; Interference; Iterative algorithms; Maximum likelihood estimation; Multipath channels; Performance gain; RAKE receivers; Optimization, receiver, transmitted reference, ultra-wide bandwidth.;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.082110
