In the context of multi-tap self-interference cancellation in the multipath channel in the Co-time Co- frequency Full Duplex (CCFD) system, the current studies focus on the experimental verification technologies in the RF-domain self-interference cancellation. The lack of performance analysis of multi-tap settings, amplitude, and phase on the self-interference is not conducive to the selection of engineering parameters. In the conditions of particular tap number and delay, this study gives the derivations for amplitude and phase of each tap, and also the influence of amplitude and phase error on the self-interference cancellation. Both the analysis and simulation show that firstly, for a specific number of taps, when the max tap delay is less than the delay of the main path of self-interference, the self-interference cancellation value is increased with the increase of the max tap delay, while the max tap delay is about two times larger than the delay of the main path of self-interference, the self-interference cancellation value decreases with the increasing of the max tap delay; secondly, for the particular tap delay coverage, when the tap number is increased or the bandwidth of self-interference signal is reduced, the self-interference cancellation value increases; thirdly, for the specific the tap number and delay setting, with the increase of amplitude or phase error, the self-interference cancellation value is more and more small.
Elsayed A, Eltawil A M, and Sabharwal A. Rate gain region and design tradeoffs for full-duplex wireless communications [J]. IEEE Transactions on Wireless Communications, 2013, 12(7): 3556-3565.
Zhang Zhi-liang, Luo Long, Shao Shi-hai, et al.. Analysis of ADC guantizing affection on SER performance of self-interference canceling common-frequency full-duplex system[J]. Journal of Electronics & Information Technology, 2013, 35(6): 1331-1337.
Wang Jun, Zhao Hong-zhi, Qing Chao-jin, et al.. Adaptive self-interference cancellation at RF domain in co-frequency co-time full duplex systems[J]. Journal of Electronics & Information Technology, 2014, 36(6): 1435-1440.
[4]
Syrjala, V, Valkama, M, Anttila, L, et al.. Analysis of oscillator phase-noise effects on self-interference cancellation in full-duplex OFDM radio transceivers[J]. IEEE Transactions on Wireless Communications, 2014, 13(6): 2977-2990.
[5]
Sahai A, Patel G, and Sabharwal A. Pushing the limits of full-duplex: design and real-time implementation[R]. The Computing Research Repository (CoRR), 2011.
[6]
Chan P W C, Lo E S, and Wang R R. The evolution path of 4G networks: FDD or TDD?[J] IEEE Communications Magazine, 2006, 44(12): 42-50.
[7]
Lee W C Y. The most spectrum-efficient duplexing system: CDD[J]. IEEE Communications Magazine, 2002, 40(3): 163-166.
[8]
Choi J I, Jain M, Srinivasan K, et al.. Achieving single channel, full duplex wireless communication[C]. Proceedings of the 16th Annual International Conference on Mobile Computing and Networking (MobiCom '10), New York, USA, 2010: 1-12.
[9]
Khojastepour M A, Sundaresan K, Rangarajan S, et al.. The case for antenna cancellation for scalable full-duplex wireless communications[C]. Proceeding of the 10th ACM Workshop on Hot Topics in Networks (HOTNETS), Massachusetts, USA, 2011: 17.
[10]
Jain M, Choi J I, Kim T M, et al.. Practical, real-time, full duplex wireless[C]. Proceedings of the 17th Annual International Conference on Mobile Computing and Networking (MobiCom,11), New York, USA, 2011: 301-312.
Xu Qiang, Quan Xin, Pan Wen-sheng, et al.. Analysis and experimental verification of RF self-interference cancelation for co-time co-frequency full-duplex LTE[J]. Journal of Electronics & Information Technology, 2014, 36(3): 662-668.
[12]
Hong S, Mehlman J, and Katti S. Picasso: flexible RF and spectrum slicing[C]. Proceedings of the ACM SIGCOMM 2012 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication (SIGCOMM), Helsinki, Finland, 2012: 37-48.
[13]
Radunovic B, Gunawardena D, Key P, et al.. Rethinking indoor wireless mesh design: low power, low frequency, full-duplex[C]. Proceedings of the Fifth IEEE Workshop on Wireless Mesh Networks (WIMESH), Boston, USA, 2010: 1-6.
[14]
Knox M E. Single antenna full duplex communications using a common carrier[C]. Proceedings of the IEEE 13th Annual Wireless and Microwave Technology Conference (WAMICON), Florida, USA, 2012: 1-6.
[15]
Bharadia D, McMilin E, and Katti S. Full duplex radios[C]. Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM,13), New York, USA, 2013: 375-386.
[16]
Oppenheim A V, Willsky A S, and Nawab S H. Signals and Systems[M]. 2nd Edition, Upper Saddle River: Prentic Hall, 1996: 312.
[17]
McMichael J G and Kolodziej K E. Optimal tuning of analog self-interference cancellers for Full-Duplex wireless communication[C]. Proceedings of the 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, USA, 2012: 246-251.