Calibration of random phase rotation for multi-band OFDM UWB signals

Huilin Xu, Liuqing Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we investigated the random phase rotation problem for multi-band orthogonal frequency-division multiplexing (MB-OFDM) ultrawide-band (UWB) systems. Random phase rotations need to be calibrated for coherent combining of MB channel information for high resolution time-of-arrival estimation. Our analysis indicates that in the presence of random phase rotations, resolution of MB-OFDM signals degrades which is reflected by increased energy leakage in the channel estimate. Based on this, we propose to calibrate random phase rotations across subbands by minimizing energy leakage. Simulation results show that the proposed technique performs well in 802.15.4a UWB channels.

Original languageEnglish (US)
Title of host publicationConference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Pages170-174
Number of pages5
DOIs
StatePublished - 2010
Externally publishedYes
Event44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010 - Pacific Grove, CA, United States
Duration: Nov 7 2010Nov 10 2010

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
CountryUnited States
CityPacific Grove, CA
Period11/7/1011/10/10

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