Performance analysis of code-multiplexed transmitted-reference ultra-wideband systems
Author
Tutay, Mehmet Emin
Gezici, Sinan
Poor H.V.
Date
2011Source Title
2011 IEEE International Conference on Ultra-Wideband (ICUWB)
Publisher
IEEE
Pages
111 - 115
Language
English
Type
Conference PaperItem Usage Stats
137
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126
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Abstract
In code-multiplexed transmitted-reference (CM-TR) ultra-wideband (UWB) systems, data signals and reference signals are transmitted using two distinct orthogonal codes. In this way, performance improvements and/or implementation advantages are obtained compared to transmitted-reference (TR) and frequency-shifted reference (FSR) ultra-wideband (UWB) systems. In this study, performance of CM-TR systems is investigated, and probability of error expressions are obtained. For the single user case, a closed-form expression for the exact probability of error is derived, whereas a Gaussian approximation, the accuracy of which depends on the number of frames per symbol, is considered for the multiuser case. Also, the maximum likelihood detector is derived, and numerical examples are presented. © 2011 IEEE.
Keywords
Ultra-widebandClosed-form expression
Data signals
Frequency-shifted references
Gaussian approximations
impulse radio
Maximum likelihood detectors
Multi-user
Multiple access
Numerical example
Orthogonal code
Per-symbol
Performance analysis
Performance improvements
Probability of errors
Reference signals
Single users
Transmitted reference
Ultrawideband systems
Codes (symbols)
Maximum likelihood
Multiple access interference
Multiplexing
Ultra-wideband (UWB)
Broadband networks