TY - GEN
T1 - Calibration of random phase rotation for multi-band OFDM UWB signals
AU - Xu, Huilin
AU - Yang, Liuqing
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79958015748&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958015748&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2010.5757491
DO - 10.1109/ACSSC.2010.5757491
M3 - Conference contribution
AN - SCOPUS:79958015748
SN - 9781424497218
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 170
EP - 174
BT - Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
T2 - 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Y2 - 7 November 2010 through 10 November 2010
ER -