Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver

Tadaaki Yuba; Yukitoshi Sanada

Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the direct conversion receiver, a π/2 phase shifter and a double balance mixer (DBM) for the radio frequency (RF) signal is required. However, it is difficult to obtain tne accurate phase shifter and the linear DBM over broad bandwidth. As a result, the balance between in-phase (I) and quadrature-phase (Q) of the demodulated signals may be lost. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed.

Original language	English
Title of host publication	2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
Pages	1229-1233
Number of pages	5
Publication status	Published - 2005 Dec 1
Event	2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005 - Berlin, Germany Duration: 2005 Sept 11 → 2005 Sept 14

Publication series

Name	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume	2

Other

Other	2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
Country/Territory	Germany
City	Berlin
Period	05/9/11 → 05/9/14

Keywords

Direct conversion
IQ imbalance
OFCDM

ASJC Scopus subject areas

Electrical and Electronic Engineering

Cite this

Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver. / Yuba, Tadaaki; Sanada, Yukitoshi.
2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005. 2005. p. 1229-1233 1651637 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yuba, T & Sanada, Y 2005, Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver. in 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005., 1651637, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, vol. 2, pp. 1229-1233, 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005, Berlin, Germany, 05/9/11.

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abstract = "Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the direct conversion receiver, a π/2 phase shifter and a double balance mixer (DBM) for the radio frequency (RF) signal is required. However, it is difficult to obtain tne accurate phase shifter and the linear DBM over broad bandwidth. As a result, the balance between in-phase (I) and quadrature-phase (Q) of the demodulated signals may be lost. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed.",

keywords = "Direct conversion, IQ imbalance, OFCDM",

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N2 - Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the direct conversion receiver, a π/2 phase shifter and a double balance mixer (DBM) for the radio frequency (RF) signal is required. However, it is difficult to obtain tne accurate phase shifter and the linear DBM over broad bandwidth. As a result, the balance between in-phase (I) and quadrature-phase (Q) of the demodulated signals may be lost. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed.

AB - Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the direct conversion receiver, a π/2 phase shifter and a double balance mixer (DBM) for the radio frequency (RF) signal is required. However, it is difficult to obtain tne accurate phase shifter and the linear DBM over broad bandwidth. As a result, the balance between in-phase (I) and quadrature-phase (Q) of the demodulated signals may be lost. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed.

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Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver

Abstract

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Keywords

ASJC Scopus subject areas

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