Memoryless Multiple Access Channel With Asymmetric Noisy State Information at the Encoders
Memoryless Multiple Access Channel With Asymmetric Noisy State Information at the Encoders
复制标题
编码器处具有不对称噪声状态信息的无记忆多址信道
DOI：
10.1109/tit.2013.2276612
复制
发表时间：
2013
影响因子：
2.5
通讯作者：
G. Como
中科院分区：
文献类型：
--
作者：
Nevroz Şen;F. Alajaji;S. Yüksel;G. Como
考虑无记忆状态相关多址信道（MAC）上的可靠通信问题，其中为编码器和解码器提供不同程度的不对称噪声信道状态信息（CSI）。对于编码器观察因果、非对称噪声CSI并且解码器观察完整CSI的情况，提供了容量区域的内部和外部边界，其对于总速率容量是严格的。接下来，建立以下每个系统设置下的信道容量区域的单字母表征：1)编码器处的CSI是解码器处的CSI的非对称确定性函数，并且编码器具有非因果噪声CSI； 2) 编码器观察到具有不对称延迟的非对称噪声CSI，而解码器观察到完整的CSI； 3) 降级的消息集场景，在编码器处具有不对称噪声CSI，而在解码器处具有完整和/或噪声CSI。这些结果的主要组成部分是最近引入的针对 MAC 的逆编码方法的概括，在编码器处具有不对称量化的 CSI，并且本文针对噪声 CSI 设置进行了相当大的扩展和适应。
The problem of reliable communication over the memoryless state-dependent multiple-access channel (MAC) is considered, where the encoders and the decoder are provided with various degrees of asymmetric noisy channel state information (CSI). For the case where the encoders observe causal, asymmetric noisy CSI and the decoder observes complete CSI, inner and outer bounds to the capacity region, which are tight for the sum-rate capacity, are provided. Next, single-letter characterizations for the channel capacity regions under each of the following system settings are established: 1) the CSI at the encoders are asymmetric deterministic functions of the CSI at the decoder and the encoders have noncausal noisy CSI; 2) the encoders observe asymmetric noisy CSI with asymmetric delays and the decoder observes complete CSI; 3) a degraded message set scenario with asymmetric noisy CSI at the encoders and complete and/or noisy CSI at the decoder. The main component in these results is a generalization of a recently introduced converse coding approach for the MAC with asymmetric quantized CSI at the encoders and herein considerably extended and adapted for the noisy CSI setup.