Performance of Differential Modulation Under RF Impairments

Bassant Selim, Paschalis C. Sofotasios, Sami Muhaidat, George K. Karagiannidis, Bayan Sharif

    Tutkimustuotos: Conference contributionScientificvertaisarvioitu

    4 Sitaatiot (Scopus)


    Coherent detection requires exact knowledge of the channel state information, which is often a challenging task in demanding practical applications. Based on this, non-coherent detection of differentially modulated signals can be considered as an alternative method. The present paper investigates the effects of in-phase/quadrature-phase imbalance (IQI), which are known to degrade the performance of wireless communication systems. Specifically, we evaluate the effects of IQI on the bit error rate (BER) performance of differential quadrature phase shift keying (DQPSK) for ideal receiver (RX) with transmitter (TX) IQI, ideal TX with RX IQI and joint TX/RX IQI. Explicit analytic expressions are derived for the BER of both single-carrier and multi-carrier systems suffering from IQI at the TX and/or RX. Extensive Monte-Carlo simulation as well as offered analytic results show that realistic TX/RX IQI values can degrade the corresponding BER by over 30%. Likewise, it is shown that the detrimental effects of IQI are more considerable on DQPSK than on QPSK.

    Otsikko2017 IEEE International Conference on Communications (ICC)
    ToimittajatD Gesbert, M Debbah, A Mellouk
    ISBN (elektroninen)978-1-4673-8999-0
    DOI - pysyväislinkit
    TilaJulkaistu - 2017
    OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
    TapahtumaIEEE International Conference on Communications - Paris, Ranska
    Kesto: 21 toukok. 201725 toukok. 2017


    NimiIEEE International Conference on Communications
    ISSN (painettu)1550-3607


    ConferenceIEEE International Conference on Communications


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