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IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
A Novel Search and Selection Method for Spreading Code of UWB System and Its Application to IEEE 802.15.4a IR-UWB System
Daegun OHJong-Wha CHONG
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2009 Volume E92.B Issue 2 Pages 675-678

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Abstract

In this paper, we propose a novel search and selection method for spreading code set of UWB system and apply it to IEEE 802.15.4a IR-UWB system. To find a spreading code with low spectral peak to average ratio (SPAR) and good auto-correlation property, the proposed method searches spreading codes in the frequency domain based on the time-frequency relation of the spreading code. Using evaluation parameters, we selected the code set which had SPAR reduced about 1.1079dB, Golay merit factor (GMF) improved by 49% and almost the same modified Golay merit factor (MGMF) compared to the code set used as preambles for IR-UWB system.

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© 2009 The Institute of Electronics, Information and Communication Engineers
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