IQ imbalance compensation scheme for MB-OFDM with transmit diversity

Yohei Kato, Tsuyoshi Ikuno, Yukitoshi Sanada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Currently, Multi-band OFDM (MB-OFDM) is considered as one of the modulation schemes of UWB and is actively investigated. It is necessary to provide low cost receivers for consumers in order to receive wide support for MB-OFDM system. Such receivers can be achieved by utilizing direct conversion architecture. The direct conversion architecture has been investigated for the purpose of cost minimization, miniaturization, and low power consumption of wireless receivers. However, the balance between the in-phase component and the quadrature-phase component of demodulated signals is lost when direct conversion architecture is used. This phenomenon is called IQ imbalance. IQ imbalance is one of the problems for the direct conversion receiver. IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, a new scheme of IQ imbalance compensation using transmit diversity is proposed. This scheme enables the system to achieve frequency diversity and compensate the influence of IQ imbalance at the same time. It is shown that the performance of the proposed scheme is better than the conventional IQ imbalance compensation scheme.

    Original languageEnglish
    Title of host publicationICUWB2006
    Subtitle of host publication2006 IEEE International Conference on Ultra-Wideband - Proceedings
    PublisherIEEE Computer Society
    Pages293-298
    Number of pages6
    ISBN (Print)142440102X, 9781424401024
    DOIs
    Publication statusPublished - 2006 Jan 1
    EventICUWB2006: 2006 IEEE International Conference on Ultra-Wideband - Waltham, MA, United States
    Duration: 2006 Sep 242006 Sep 27

    Publication series

    NameICUWB2006: 2006 IEEE International Conference on Ultra-Wideband - Proceedings

    Other

    OtherICUWB2006: 2006 IEEE International Conference on Ultra-Wideband
    CountryUnited States
    CityWaltham, MA
    Period06/9/2406/9/27

    Keywords

    • Direct conversion
    • IQ imbalance
    • MB-OFDM
    • UWB

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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