OFDM Full-duplex Bidirectional DF Relaying System with I/Q Imbalance and Performance Analysis

WU Haowei; ZHAO Junbo; WEN Ge; OU Jinglan

doi:10.11999/JEIT160545

Volume 39 Issue 3

Mar. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(3): 619-625

WU Haowei, ZHAO Junbo, WEN Ge, OU Jinglan. OFDM Full-duplex Bidirectional DF Relaying System with I/Q Imbalance and Performance Analysis[J]. Journal of Electronics & Information Technology, 2017, 39(3): 619-625. doi: 10.11999/JEIT160545

Citation:

WU Haowei, ZHAO Junbo, WEN Ge, OU Jinglan. OFDM Full-duplex Bidirectional DF Relaying System with I/Q Imbalance and Performance Analysis[J]. Journal of Electronics & Information Technology, 2017, 39(3): 619-625. doi: 10.11999/JEIT160545

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OFDM Full-duplex Bidirectional DF Relaying System with I/Q Imbalance and Performance Analysis

doi: 10.11999/JEIT160545

1.
(Key Laboratory of Aerocraft Tracking Telemetering &
2.
(College of Communication Engineering, Chongqing University, Chongqing 400044, China)

Funds:

The National 863 Program of China (2015AA 7072014C), The Chongqing Academician Fund Project (cstc2014 yykfys90001), The Fundamental Research Funds for the Central Universities (106112013CDJZR165502, CDJZR14100050)

Received Date: 2016-05-28
Rev Recd Date: 2016-09-30
Publish Date: 2017-03-19

Abstract

Abstract

The full-duplex transmission is one of the key technologies in the 5 G communication systems, due to the ability of improving spectrum efficiency. However, the performance of the full-duplex system, with the zero intermediate frequency structure, is badly impacted by the Residual Self-Interference (RSI) and In-phase/ Quadrature (I/Q) imbalance. In this paper, the OFDM full-duplex bidirectional relaying system under the RSI and I/Q Imbalance (IQI) is investigated, in a cooperative scenario where the Decode-and-Forward (DF) protocol is considered. The outage performance of the system and its closed-form expressions are derived under Rayleigh fading channels, and the influences of the IQI and RSI on system performances are analyzed, respectively. The simulation results verify the analysis, and the conclusions are given as follows. First, the outage performance improves as decreasing of the IQI and RSI. Second, the optimal improvement of outage performance is achieved by reducing the RSI and I/Q imbalance, according the route with the steepest descent method. Third, the best way for enhancing the outage performance is chosen, by the relative position between the steepest descent route and the current coordinate of IQI-RSI.
- Full-duplex,
- Bidirectional relaying,
- In-phase/Quadrature (I/Q) imbalance,
- Outage probability

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References(17)

References

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