Pilot designs for channel estimation of MIMO OFDM systems with frequency-dependent I/Q imbalances

H Minn, D Munoz - IEEE Transactions on Communications, 2010 - ieeexplore.ieee.org
Multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM)
systems facilitate high data rate wireless communications, and require reliable channel …

A time-domain joint estimation algorithm for CFO and I/Q imbalance in wideband direct-conversion receivers

YC Pan, SM Phoong - IEEE transactions on wireless …, 2012 - ieeexplore.ieee.org
Carrier frequency offset (CFO) and in-phase and quadrature-phase (I/Q) imbalance are two
of the common front-end impairments in low-cost communication devices. It is known that …

I/Q imbalance in generalized frequency division multiplexing under Weibull fading

M Lupupa, J Qi - … Symposium on Personal, Indoor, and Mobile …, 2015 - ieeexplore.ieee.org
Fifth generation (5G) wireless communications promise low cost, reliable and high speed
communication. To achieve this and to help overcome the drawbacks associated with …

Blind frequency-dependent IQ imbalance compensation scheme using CMA for OFDM system

M Matsui, T Nakagawa, R Kudo… - 2011 IEEE 22nd …, 2011 - ieeexplore.ieee.org
Frequency-dependent IQ imbalance will be one of the degrading factors for future wideband
wireless communication systems. This paper presents a blind compensation scheme for the …

Low-Complexity Blind I/Q Estimation and Compensation of Wideband Zero-IF Receivers

L Luo, J Wang, J Song, C Liu - 2021 International Conference …, 2021 - ieeexplore.ieee.org
Frequency-dependent I/Q imbalance has become one of the most important factors affecting
wireless communication systems in zero intermediate frequency (zero-IF) receivers, due to …

[PDF][PDF] Efficient compensation of transmitter and receiver IQ imbalance in OFDM systems

D Tandur, M Moonen EURASIP Member - EURASIP Journal on Advances …, 2010 - Springer
Radio frequency impairments such as in-phase/quadrature-phase (IQ) imbalances can
result in a severe performance degradation in direct-conversion architecture-based …

Estimation scheme of the receiver IQ imbalance under carrier frequency offset in communication system

YJ Chiu, SP Hung - IET communications, 2010 - IET
IQ signal processing is widely utilised in today's communication systems. However, it usually
faces a common problem of front-end distortion such as IQ imbalance and carrier frequency …

Optimal pilot based frequency-dependent I/Q imbalance compensation for wideband direct-conversion transmitters

K Sun, I Darwazeh, LK Huang… - 2012 IEEE Wireless …, 2012 - ieeexplore.ieee.org
Current trends in low-cost and low power consumption transmitters in state-of-the-art
wireless systems is to use the direct-conversion principle. Such transmitters, however, suffer …

Joint CIR, CFO, DCO and FI/FS Rx IQ imbalance estimation

MA Ali, M Arif, W Kumar - IET Communications, 2016 - Wiley Online Library
The aim of this study is to design a receiver architecture which can jointly estimate the
frequency selective (FS) channel impulse response (CIR), frequency independent (FI)/FS …

Hybrid time/frequency domain compensator for RF impairments in OFDM systems

A Kiayani, L Anttila, Y Zou… - 2011 IEEE 22nd …, 2011 - ieeexplore.ieee.org
I/Q signal processing based communication systems suffer from analog front-end (FE)
imperfections such as in-phase and quadrature-phase (I/Q) imbalance and carrier frequency …