Carrier frequency offset estimation for OFDM direct-conversion receivers

M Morelli, M Moretti - IEEE transactions on wireless …, 2012 - ieeexplore.ieee.org
We investigate the problem of carrier frequency offset (CFO) recovery in an OFDM direct-
conversion receiver plagued by both dc-offset and frequency-selective I/Q imbalance. In …

Frequency estimation in OFDM direct-conversion receivers using a repeated preamble

AA D'Amico, L Marchetti, M Morelli… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
This paper investigates the problem of carrier frequency offset (CFO) recovery in an OFDM
receiver affected by frequency-selective in-phase/quadrature (I/Q) imbalances. The analysis …

Periodic preamble-based frequency recovery in OFDM receivers plagued by I/Q imbalance

AA D'Amico, M Morelli, M Moretti - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
The direct conversion receiver (DCR) architecture has received much attention in the last
few years as an effective means to obtain user terminals with reduced cost, size, and power …

Training symbol design for channel estimation and IQ imbalance compensation in OFDM systems

E Manasseh, S Ohno - IEICE Transactions on Fundamentals of …, 2012 - search.ieice.org
In this paper, training symbol designs for estimation of frequency selective channels and
compensation of in-phase (I) and quadrature (Q) imbalances on orthogonal frequency …

Golay sequence based time-domain compensation of frequency-dependent I/Q imbalance

C Lei, L Zhigang, C Xiantao… - China …, 2014 - ieeexplore.ieee.org
A time-domain frequency-dependent I/Q imbalance compensation scheme based on Golay
complementary sequence for receiver is presented. By utilizing property of Golay sequence …

FPGA implementation of joint CFO and IQ-imbalance compensator for narrow-band wireless system

T Yoshida, D Nojima, Y Nagao… - The 2011 …, 2011 - ieeexplore.ieee.org
In direct conversion receiver, I/Q imbalance is caused by non orthogonality between in-
phase component and quadrature-phase component caused by imperfections of quadrature …

Blind Adaptive Compensation of Strong Frequency-Dependent IQ Imbalance for Wideband Direct-Conversion Receivers

X Xia, Y Liu, S Shao, J Zhou… - 2019 11th International …, 2019 - ieeexplore.ieee.org
In this paper, we propose an adaptive compensation algorithm to reduce the strong
frequency-dependent in-phase/quadrature phase (IQ) imbalance in wideband direct …

Efficient Joint Estimation and Compensation of CFO, Tx/Rx Frequency‐Selective I/Q Imbalance, and the MIMO Radio Channel in OFDM Systems

J Luo, W Keusgen, A Kortke - Journal of Electrical and …, 2013 - Wiley Online Library
MIMO OFDM is a very promising technique for future wireless communication systems. By
applying direct conversion architecture, low‐cost, low‐power, small size, and flexible …

Time-domain frequency-dependent I/Q imbalance compensation based on golay sequence

L Chen, G Yue, X Cheng, S Li - 2014 IEEE 11th Consumer …, 2014 - ieeexplore.ieee.org
A time-domain golay complementary sequences based frequency-dependent I/Q imbalance
compensation scheme for receiver is presented. By utilizing property of golay sequences …

RTL design of joint CFO and IQ-imbalance compensator for narrow-band wireless system

T Yoshida, D Nojima, L Lanante Jr… - … on Computer and …, 2012 - ph01.tci-thaijo.org
Direct conversion receiver is a well-known receiver architecture that enables small, low
power and cheap radio. However, I/Q imbalance caused by non-orthogonality between in …