Advanced Receiver Design for Mitigating Multiple RF Impairments in OFDM Systems : Algorithms and RF Measurements
Joint Authors
Zou, Yaning
Anttila, Lauri
Valkama, Mikko
Kiayani, Adnan
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-30
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
Direct-conversion architecture-based orthogonal frequency division multiplexing (OFDM) systems are troubled by impairments such as in-phase and quadrature-phase (I/Q) imbalance and carrier frequency offset (CFO).
These impairments are unavoidable in any practical implementation and severely degrade the obtainable link performance.
In this contribution, we study the joint impact of frequency-selective I/Q imbalance at both transmitter and receiver together with channel distortions and CFO error.
Two estimation and compensation structures based on different pilot patterns are proposed for coping with such impairments.
The first structure is based on preamble pilot pattern while the second one assumes a sparse pilot pattern.
The proposed estimation/compensation structures are able to separate the individual impairments, which are then compensated in the reverse order of their appearance at the receiver.
We present time-domain estimation and compensation algorithms for receiver I/Q imbalance and CFO and propose low-complexity algorithms for the compensation of channel distortions and transmitter IQ imbalance.
The performance of the compensation algorithms is investigated with computer simulations as well as with practical radio frequency (RF) measurements.
The performance results indicate that the proposed techniques provide close to the ideal performance both in simulations and measurements.
American Psychological Association (APA)
Kiayani, Adnan& Anttila, Lauri& Zou, Yaning& Valkama, Mikko. 2012. Advanced Receiver Design for Mitigating Multiple RF Impairments in OFDM Systems : Algorithms and RF Measurements. Journal of Electrical and Computer Engineering،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-494113
Modern Language Association (MLA)
Kiayani, Adnan…[et al.]. Advanced Receiver Design for Mitigating Multiple RF Impairments in OFDM Systems : Algorithms and RF Measurements. Journal of Electrical and Computer Engineering No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-494113
American Medical Association (AMA)
Kiayani, Adnan& Anttila, Lauri& Zou, Yaning& Valkama, Mikko. Advanced Receiver Design for Mitigating Multiple RF Impairments in OFDM Systems : Algorithms and RF Measurements. Journal of Electrical and Computer Engineering. 2012. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-494113
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494113