Full-Duplex Amplify-and-Forward Relaying under I/Q Imbalance
المؤلف | Samara L. |
المؤلف | Gouissem A. |
المؤلف | Hamila R. |
المؤلف | Hasna , Mazen |
المؤلف | Al-Dhahir N. |
تاريخ الإتاحة | 2022-04-26T11:06:46Z |
تاريخ النشر | 2020 |
اسم المنشور | IEEE Transactions on Vehicular Technology |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1109/TVT.2020.2992308 |
الملخص | A major performance limiter in amplify-and-forward (AF) full-duplex (FD) relaying is the high level of residual self-interference (SI) due to the imperfect estimation of the effective self-interfering channel. One primary obstacle that contributes to the ineffectiveness of estimating the effective SI channel is the transceiver's radio-frequency (RF) impairments. In this paper, we consider the effect of in-phase/quadrature imbalance (IQI) on the process of SI cancellation in FD AF transceivers. We model the cumulative SI as a function of IQI, and thoroughly analyze the stability of the performance of the relay by analyzing the different transmission parameters and configurations that guarantee the stability of the system. In particular, depending on the RF impairments of the relay's transceiver, the wireless channel conditions, and the channel estimation accuracy, the relay's maximum amplification factor and transmission power that limit the residual SI power and prevent the system oscillations are analytically derived and verified by Monte-Carlo simulations. Finally, we show that the average SI power is bounded by a sum of scaled Gamma functions. |
راعي المشروع | Qatar Foundation; Qatar National Research Fund |
اللغة | en |
الناشر | Institute of Electrical and Electronics Engineers Inc. |
الموضوع | Channel estimation Finite difference method Monte Carlo methods System stability Transmissions Amplification factors Amplify-and-forward Amplify-and-forward relaying Imperfect estimations Interfering channels Self-interferences Transmission parameters Wireless channel condition Radio transceivers |
النوع | Article |
الصفحات | 7966-7970 |
رقم العدد | 7 |
رقم المجلد | 69 |
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