NDLI: Energy-Based Equalization of A Non-Coherent On-Off Keying UWB System for Data Rate Enhancement

Content Provider	IEEE Xplore Digital Library
Author	Sai Ho Wong Xiaoming Peng Chin, F. Madhukumar, A.S.
Copyright Year	2007
Description	Author affiliation: A*STAR, Singapore (Sai Ho Wong; Xiaoming Peng; Chin, F.)
Abstract	Non-coherent ultra-wideband (UWB) impulse radio systems are easier to implement than their coherent counterparts, because the strict synchronization requirements are relaxed. The trade-off for simplicity is a loss in performance. The pulse-repetition interval (PRI) for non-coherent UWB schemes is limited by the maximum channel delay, to avoid inter-symbol interference (ISI). This affects the maximum data rate achievable. For a coherent system, ISI can be mitigated by equalization, which is generally not applicable for non-coherent methods. In a non-coherent energy detector for instance, the square-law device at the receiver destroys the multipath phase information, making complete ISI mitigation impossible. This paper proposes the use of zero-forcing equalizer based on the partial channel information derived from the energy received over an integration time for on-off keying (OOK) transmission. The proposed scheme does not suffer from noise enhancement because the multipaths do not fade simultaneously. The performance of the proposed system is extensively simulated and the results are discussed in detail.
Starting Page	381
Ending Page	386
File Size	4922210
Page Count	6
File Format	PDF
ISBN	9781424405206
DOI	10.1109/ICUWB.2007.4380974
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-24
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data engineering zero-forcing equalization Pulse modulation Delay Energy capture RAKE receivers Intersymbol interference Bandwidth non-coherent UWB and inter-symbol interference Frequency synchronization Energy detector Demodulation Ultra wideband technology
Content Type	Text
Resource Type	Article

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