A Joint Design of Physical Layer Network Coding and Channel Coding for Wireless Networks
Network coding has been receiving much attention recently for its ability to improve spectral efficiency and achieve throughput optimality. In this paper, we propose a practical scheme of joint physical layer network-channel coding for two-way relay scenario. At relay node physical-layer network coding (PNC) is employed to make use of the additive nature of simultaneously arriving electromagnetic wave (EW) for equivalent coding operation. In doing so, PNC can potentially achieve 50％ throughput increase compared with straightforward network coding. Meanwhile, we take advantage of the linearity of Turbo code and soft detection module, which not only reduce the complexify of encoding and decoding, but also achieve good performance in high Signal Noise Ratio (SNR). Simulation results show that the proposed scheme outperforms the straightforward network coding in terms of channel capacity and Bit Error Rate (BER) performance when applied to wireless networks.
network coding physical layer channel coding two-way relay channel turbo code soft detection
ZHOU Lian-chi XIU Chun-di
School of Electronic & Information Engineering Beihang University Beijing 100191, China
国际会议
杭州
英文
312-316
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）