Interactive presentation: Boosting SER test for RF transceivers by simple DSP technique
Proceedings of the conference on Design, automation and test in Europe
Block ICA for image suppression and carrier frequency offset correction in diversity BPSK receivers
ISPRA'06 Proceedings of the 5th WSEAS International Conference on Signal Processing, Robotics and Automation
Applying OOK modulation in OFDM to reduce the ICI due to CFO and IQ imbalance
International Journal of Communication Networks and Distributed Systems
Using the fractional Hilbert transform to model a quadrature IF receiver
ICC'08 Proceedings of the 12th WSEAS international conference on Circuits
WSEAS TRANSACTIONS on COMMUNICATIONS
Envelope and phase distribution of two correlated Gaussian variables
IEEE Transactions on Communications
A CMOS VGA with DC offset cancellation for direct-conversion receivers
IEEE Transactions on Circuits and Systems Part I: Regular Papers
IEEE Transactions on Wireless Communications
Compensation of component mismatch in RF receivers using digital techniques
CSS '07 Proceedings of the Fifth IASTED International Conference on Circuits, Signals and Systems
New adaptive method for IQ imbalance compensation of quadrature modulators in predistortion systems
EURASIP Journal on Advances in Signal Processing
Blind I/Q imbalance compensation using independent component analysis in MIMO OFDM systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
IEEE Transactions on Signal Processing
Channel estimation in the presence of transmitter and receiver I/Q mismatches for OFDM systems
IEEE Transactions on Wireless Communications
Joint compensation of IQ imbalance and phase noise in OFDM wireless systems
IEEE Transactions on Communications
Compensation of IQ imbalance based on a simplified blind source separation method
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Kalman filtering based compensation for I/Q imbalance and CFO in time-varying MIMO OFDM systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Exploiting the diversity gain of transmitter I/Q imbalance in single-antenna OFDM systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Effect of imperfect channel estimation in I/Q imbalanced OFDM system
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Analysis and compensation of I/Q imbalance in MIMO transmit-receive diversity systems
IEEE Transactions on Communications
Independent component analysis based semi-blind I/Q imbalance compensation for MIMO OFDM systems
IEEE Transactions on Wireless Communications
Interference suppression in diversity wireless receivers via ICA with individual adaptations
MUSP'06 Proceedings of the 6th WSEAS international conference on Multimedia systems & signal processing
Journal of Electrical and Computer Engineering - Special issue on Implementations of Signal-Processing Algorithms for OFDM Systems
An analytical technique for characterization of transceiver IQ imbalances in the loop-back mode
DATE '12 Proceedings of the Conference on Design, Automation and Test in Europe
| Hi-index | 35.69 |
I/Q signal processing is widely utilized in today's communication receivers. However, all I/Q processing receiver structures, such as the low-IF receiver, face a common problem of matching the amplitudes and phases of the I and Q branches. In practice, imbalances are unavoidable in the analog front-end, which results in finite and usually insufficient rejection of the image frequency band. This causes the image signal to appear as interference on top of the desired signal. We carry out general signal analysis of an imbalanced I/Q processing receiver and propose novel methods for I/Q imbalance compensation using baseband digital signal processing. A simple structure for compensation is derived, based on a traditional adaptive interference canceller. Improved image rejection can also be obtained by using more advanced blind source separation techniques. Theoretical analysis of the performance of the proposed imbalance compensation structures is presented. In addition, some simulation results are provided in order to further evaluate the performance of the proposed methods. The results indicate that the I/Q imbalance can be effectively compensated during the normal operation of the receiver even in the rapidly changing case, as long as a linear system model for the imbalance is valid