Hybrid Digital-Analog Noisy Network Coding

We investigate noisy network coding strategies for the two-way Gaussian relay channel. We present three hybrid digital-analog noisy network coding schemes. The schemes are constructed by combination of linear analog noisy network coding, Wyner-Ziv- based compress-and-forward, and noisy network coding as proposed by Lim et al. We show that our proposed schemes outperform existing protocols for this problem.