Performance Comparison of RAKE Receivers in SC-UWB Systems and DS-UWB Systems

Zhenyu XIAO
Depeng JIN
Lieguang ZENG

IEICE TRANSACTIONS on Communications   Vol.E93-B    No.4    pp.1041-1044
Publication Date: 2010/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.1041
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies

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RAKE receivers are generally employed to collect multipath energy in single-carrier ultra-wideband (SC-UWB) systems and direct-sequence ultra-wideband (DS-UWB) systems. Performance of RAKE receivers in these two kinds of systems is studied and compared with each other in this letter. Both theoretical analysis and simulation results over IEEE 802.15.3a UWB channels are presented. Our results show that, with the same signal to noise ratio (SNR) per bit, the same occupied bandwidth and the same number of RAKE fingers, RAKE receivers with maximum ratio combination (MRC) in SC-UWB systems can achieve exactly the same performance as that in DS-UWB systems.