Abstract
To improve the bit error rate (BER) performance of physical-layer network coding (PNC) in data length asymmetric two-way relay channels (TWRC), a new PNC scheme named combined denoise-and-forward and superposition coded physical-layer network coding (DNF-SC-PNC) is proposed, and the decoding algorithm of the scheme is improved. In the new scheme, the mixed information is denoised and superposed at the relay node, which will be broadcasted to the destination nodes. The destination nodes can use successive interference cancellation (SIC) or likelihood rate (LLR) algorithm for decoding. Theoretical analysis and simulation results show that DNF-SC-PNC can provide better BER performance and better throughput rate performance when the data length is asymmetric. Furthermore, we also proved that LLR algorithm can provide better performance than SIC algorithm in data length asymmetric TWRC.
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References
Liew, S. C., Zhang, S., & Lu, L. (2011). Physical-layer network coding: Tutorial, survey, and beyond. Physical Communication, 6, 4–42.
Papasogiannis, A., Burr, A. G., & Tao, M. (2012). On the maximum achievable sum-rate of interfering two-way relay channels. IEEE Communications Letters, 16, 72–75.
Denno, S., & Umehara, D. (2013). XOR physical layer network coding with error control techniques and its performance. Technical Report of IEICE RCS (p. 113).
Wang, S., Song, Q., Guo, L., et al. (2013). Constellation mapping for physical-layer network coding with M-QAM modulation. In Proceeding of IEEE Global Telecommunications Conference (GLOBALCOM).
Chen, Z., & Ho, P. H. (2016). QoS Guaranteed energy minimization over two-way relaying networks. Mathematics. https://arxiv.org/abs/1512.03982.
Wang, L., & Wu, Z. (2012). BER analysis of physical layer network coding with PSK modulations for two-way relay channels. In Proceedings of IEEE International Conference on Signal Processing, Communication and Computing (ICSPCC).
Li, B., Wang, G., Yang, H., & Liu, R. (2013). Combined orthogonal physical-layer network coding in two-way relay communications. Journal of Harbin Institute of Technology, 45, 12–16.
Chen, Z., Xia, B., Hu, Z., et al. (2014). Design and analysis of multi-level physical-layer network coding for Gaussian two-way relay channels. IEEE Transactions on Communications, 62(6), 1803–1817.
Liu, J., Tao, M., Xu, Y., et al. (2009). Superimposed XOR: A new physical layer network coding scheme for two-way relay channels. In Proceedings of IEEE Global Telecommunications Conference (GLOBALCOM).
Ouyang, Y., Jia, X., Fu, H., et al. (2011). Adaptive jointing superposition and denoising-and-forward physical layer network coding. China Communication, 8, 43–51.
Li, B., Wang, G., Chong, H. J. P., et al. (2013). Performance of physical-layer network coding in asymmetric two-way relay channels. China Communication, 10, 65–73.
Wu, D. (2015). The design and study of signal detection of massive MIMO. Master’s Thesis, Harbin Institute of Technology, Harbin.
Li, A. L. I., Lamare, R. C. D., & Burr, A. G. (2016). Successive interference cancellation aided sphere decoder for multi-input multi-output systems. EURASIP Journal on Wireless Communications and Networking, 1, 51.
Cai, I., Dai, N., & Dai, M. (2013). Improved detection algorithm MMSE-SIC in narrowband rayleigh fast fading channel. Dig TV, 37, 4–6.
Yang, Z. (2012). Researches on superposition coded modulation in wireless communication system. Master’s Thesis, Chongqing University of Posts and Telecommunications, Chongqing.
Acknowledgements
This work is supported in part by National Natural Science Foundation of China (Nos. 61401118, 61371100, 61671184 and 61601221), Natural Science Foundation of Shandong Province (No. ZR201709220298), the Fundamental Research Funds for the Central Universities (Nos. HIT.NSRIF.201720 and 2016100) and the Scientific Research Foundation of Harbin Institute of Technology at Weihai (Nos. HIT(WH)201409 and HIT(WH)201410).
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Yang, H., Li, B., Liu, G. et al. DNF-SC-PNC: a new physical-layer network coding scheme for two-way relay channels with asymmetric data length. Wireless Netw 25, 3727–3734 (2019). https://doi.org/10.1007/s11276-018-1659-6
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DOI: https://doi.org/10.1007/s11276-018-1659-6