Paper Info
Title
Performance of Fractional Delay Estimation in Joint Estimation Algorithm Dedicated to Digital Tx Leakage Compensation in FDD Transceivers.
Abstract
This paper deals with the performance of the fractional delay estimator in the joint complex amplitude/delay estimation algorithm dedicated to digital Tx leakage compensation in FDD transceivers. Such transceivers suffer from transmitter-receiver signal leakage. Combined with non linearity of components in the receiver path, the baseband received signal is impaired by a baseband polluting signal. This baseband polluting term depends on the equivalent Tx leakage channel which models leakages of the receiver path. In (Gerzaguet et al., Digit. Signal Proc 51:35–46, 2016), we have proposed a Tx leakage interference cancellation algorithm based on joint estimation of the complex gain and the fractional delay of the equivalent Tx leakage channel and we have derived the asymptotic performance of the complex gain estimator, that showed the necessity of the fractional delay estimation. In this paper, we propose a comprehensive study of the fractional delay estimation algorithm and its analytic performance. The study is based on the analysis of the S-curve and loop noise variance of the timing error detector, from which an approximation of the asymptotic performance of the joint estimation algorithm is derived.
Year
DOI
Venue
2017
10.1186/s13638-017-0922-3
EURASIP J. Wireless Comm. and Networking
Keywords
DocType
Volume
Tx leakage,FDD transceiver,Digital compensation,Least-mean-square algorithm,Joint estimation,S-curve
Journal
2017
Issue
ISSN
Citations 
1
1687-1472
0
PageRank 
References 
Authors
0.34
9
4
Name
Order
Citations
PageRank
Robin Gerzaguet1567.86
Laurent Ros2215.45
Fabrice Belvèze392.54
Jean-Marc Brossier421.07