IEEE 802.15.4a based ultra wideband systems for coexistence with primary users

Peaceful coexistence is a major implementation issue for both cognitive radios and ultra wideband (UWB) systems. Accordingly, the UWB impulse radio (UWB-IR) based Wireless Personal Area Network (WPAN) standard IEEE 802.15.4a has suggested using linear combination of pulses to limit interference to c...

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Bibliographic Details
Published in2015 38th International Conference on Telecommunications and Signal Processing (TSP) pp. 1 - 5
Main Authors Findikl, Caglar, Erkucuk, Serhat, Celebi, Mehmet Ertugrul
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2015
Subjects
coexistence
cognitive radios
IEEE 802.15 Standard
Interference
OFDM
spectrum shaping
System performance
Transceivers
Ultra wideband (UWB) systems
Wideband
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Summary:Peaceful coexistence is a major implementation issue for both cognitive radios and ultra wideband (UWB) systems. Accordingly, the UWB impulse radio (UWB-IR) based Wireless Personal Area Network (WPAN) standard IEEE 802.15.4a has suggested using linear combination of pulses to limit interference to coexisting primary systems. In this paper, motivated by implementing the IEEE 802.15.4a based UWB-IR systems for peaceful coexistence, we consider the implementation of linear combination of pulses as suggested by the standard. Accordingly, we (i) design linearly combined pulses that conform to the standard requirements, and (ii) study the UWB-IR system performance in the presence of orthogonal frequency division multiplexing (OFDM) based wideband primary systems with various bandwidths and subcarriers. The study shows that the UWB-IR system performance can be significantly improved by selecting suitable pulses for transmission and employing appropriate filtering techniques at the receiver when the primary system is active. The results are important for the practical implementation of IEEE 802.15.4a based UWB systems coexisting with licensed systems.
DOI:10.1109/TSP.2015.7296418