论文标题
双向源通道编码
Two-Way Source-Channel Coding
论文作者
论文摘要
我们提出了一种自适应损耗的关节源通道编码（JSCC）方案，用于在两端离散的无内存的双向通道（DM-TWC）上发送相关源。主要思想是通过自适应编码机制促进终端的独立操作，该机制可以减轻同时通道传输所产生的交叉干扰，并同时利用源的相关性，以减少端到端重建扭曲。我们的自适应JSCC方案不仅包含双向同时交流的现有损失编码方法，还可以提高其性能。此外，我们为双向有损传输问题提供了外部边界，并在某些特殊设置中建立完整的JSCC定理。在这些特殊情况下，非自适应单独的源通道编码（SSCC）方案实现了最佳性能，从而简化了源通道通信系统的设计。
We propose an adaptive lossy joint source-channel coding (JSCC) scheme for sending correlated sources over two-terminal discrete-memoryless two-way channels (DM-TWCs). The main idea is to couple the independent operations of the terminals via an adaptive coding mechanism, which can mitigate cross-interference resulting from simultaneous channel transmissions and concurrently exploit the sources' correlation to reduce the end-to-end reconstruction distortions. Our adaptive JSCC scheme not only subsumes existing lossy coding methods for two-way simultaneous communication but also improves their performance. Furthermore, we derive outer bounds for our two-way lossy transmission problem and establish complete JSCC theorems in some special settings. In these special cases, a non-adaptive separate source-channel coding (SSCC) scheme achieves the optimal performance, thus simplifying the design of the source-channel communication system.
