Abstract
To improve the bit error rate (BER) performance of physical-layer network coding (PNC) in data length asymmetric two-way relay communication systems, a new PNC scheme named combined denoise-and-forward and superposition-based physical-layer network coding (DNF-SC-PNC) is proposed, and the decoding algorithm of the scheme is improved. In the scheme, the mixed information is denoised and superposed in the relay node, which will be broadcasted to destination node. The destination node will use SIC or LLR algorithm 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 the LLR algorithm can provide better BER performance and better throughput rate performance than SIC algorithm when the data length is asymmetric.
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Acknowledgments
This work is supported in part by National Natural Science Foundation of China (No. 61401118, No. 61371100 and No. 61671184), Natural Science Foundation of Shandong Province (No. ZR2014FP016), the Foundation of Science and Technology on Communication Networks Key Laboratory, the Fundamental Research Funds for the Central Universities (No. HIT.NSRIF.2016100 and 201720) and the Scientific Research Foundation of Harbin Institute of Technology at Weihai (No. HIT(WH)201409 and No. HIT(WH)201410).
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Li, B., Cui, W., Yang, H., Liu, G., Peng, X. (2019). Combined Denoise-and-Forward and Superposition Coded Physical-Layer Network Coding in Data Length Asymmetric Two-Way Relay Channels. In: Liang, Q., Mu, J., Jia, M., Wang, W., Feng, X., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2017. Lecture Notes in Electrical Engineering, vol 463. Springer, Singapore. https://doi.org/10.1007/978-981-10-6571-2_37
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DOI: https://doi.org/10.1007/978-981-10-6571-2_37
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