Title
IQ Imbalance Compensation for Generalized Frequency Division Multiplexing Systems.
Abstract
Generalized frequency division multiplexing (GFDM) with a flexible structure is one of the promising candidates for the fifth generation wireless communication system. This letter presents a compensation scheme of in-phase and quadrature (IQ) imbalance caused by radio frequency front-end for GFDM. The motivation behind this letter is to relax the requirement on time-invariant channel in the process of estimating IQ imbalance parameters. A low computational complexity approach is proposed to directly estimate IQ imbalance parameters without any prior knowledge of channel. Meanwhile, the structure of training sequences that avoid channel estimation is derived. Simulation results confirm that the proposed method can reduce the effects of IQ imbalance and provide reliable performance even over severe IQ imbalance environment.
Year
DOI
Venue
2017
10.1109/LWC.2017.2699961
IEEE Wireless Commun. Letters
Keywords
Field
DocType
Channel estimation,Training,Time-frequency analysis,Frequency division multiplexing,Wireless communication,OFDM,Modulation
Mathematical optimization,Wireless,Telecommunications,Frequency-division multiplexing,Communication channel,Electronic engineering,Modulation,Time–frequency analysis,Statistical time division multiplexing,Mathematics,Orthogonal frequency-division multiplexing,Computational complexity theory
Journal
Volume
Issue
ISSN
6
4
2162-2337
Citations 
PageRank 
References 
4
0.41
7
Authors
5
Name
Order
Citations
PageRank
Nan Tang140.41
Shiwen He240734.11
Chunlin Xue340.75
Yongming Huang41472146.50
Luxi Yang51180118.08