Paper Info
Title
Carrier Frequency Offset and I/Q Imbalance Compensation for MB-OFDM Based UWB System
Abstract
Two types of wireless communication system imperfections, namely carrier frequency offset (CFO) and in-phase/quadrature-phase (I/Q) imbalance, are addressed in this paper. We propose an efficient time domain CFO and I/Q imbalance estimation and compensation scheme for multi-band orthogonal frequency division multiplexing based ultra-wideband system. In this scheme, a data-aided CFO estimation algorithm, which is robust to a large I/Q imbalance, is presented. Also, a time domain I/Q imbalance estimation algorithm based on partially CFO compensated preambles is introduced. Finally a two-step joint CFO and I/Q imbalance compensation scheme is developed. Taking full advantage of the ECMA-368 preamble symbols, the proposed scheme is competent for large I/Q imbalance (2-dB gain error and 20-deg Phase error) and carrier frequency offset (50 ppm), and the results are confirmed by simulations.
Year
DOI
Venue
2013
10.1007/s11277-012-0863-4
Wireless Personal Communications
Keywords
Field
DocType
uwb system,carrier frequency,q imbalance compensation,compensation scheme,q imbalance compensation scheme,multi-band orthogonal frequency division,q imbalance estimation algorithm,q imbalance,proposed scheme,data-aided cfo estimation algorithm,two-step joint cfo,carrier frequency offset,q imbalance estimation
Time domain,Wireless communication systems,Preamble,Phase error,Control theory,Computer science,Carrier frequency offset,Information engineering,Orthogonal frequency-division multiplexing
Journal
Volume
Issue
ISSN
71
2
1572-834X
Citations 
PageRank 
References 
0
0.34
11
Authors
4
Name
Order
Citations
PageRank
Liang Liu1142.35
Junyan Ren215441.40
Jun Zhou300.34
Fan Ye43421.14