Coded-reference ultra-wideband systems
Author
Gezici, Sinan
Date
2008-09Source Title
Proceeedings of The 2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008
Pages
117 - 120
Language
English
Type
Conference PaperItem Usage Stats
134
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101
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Abstract
Transmitted-reference (TR) and frequency-shifted reference (FSR) ultra-wideband (UWB) systems employ pairs of reference and data signals, which are shifted in the time and frequency domains, respectively, to facilitate low-to-medium data rate communications without the need for complex channel estimation and template signal generation. On the other hand, the recently proposed coded-reference (CR) UWB systems provide orthogonalization of the reference and data signals in the code domain, which has advantages in terms of performance and/or implementation complexity. In this paper, CR UWB systems are investigated. First, it is shown that a CR UWB system can be considered as a generalized non-coherent pulse-position modulated system. Then, an optimal receiver according to the Bayes decision rule is derived for CR UWB systems. In addition, the asymptotic optimality properties of the conventional CR UWB receivers are investigated. Finally, simulation results are presented to compare the performance of the optimal and conventional CR UWB receivers. ©2008 IEEE.
Keywords
Bayes decision ruleCoded-reference (CR)
Frequency-shifted reference (FSR)
Transmitted-reference (TR)
Ultra-wideband (UWB)
Channel estimation
Frequency estimation
Radio receivers
Signal generators
Signal receivers
Telecommunication systems
Wireless telecommunication systems
Broadband networks