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首页> 外文会议>IEEE International Symposium on Information Theory >State-dependent Gaussian Z-interference channel: Capacity results
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State-dependent Gaussian Z-interference channel: Capacity results

机译：状态相关的高斯Z干扰通道：容量结果

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摘要

A type of state-dependent Gaussian Z-interference channels is studied, in which transmitters 1 and 2 wish to send two messages to receivers 1 and 2, and only receiver 1 is interfered by transmitter 2's signal. Both receivers are corrupted by the same but differently scaled state sequence. The state information is assumed to be known noncausally at both transmitters. The channel is partitioned into very strong, strong, and weak interference regimes based on the strength of the interference. Respectively for the very strong and strong regimes, the capacity region and points on the capacity region boundary are characterized under certain channel parameters by designing joint dirty paper coding between two transmitters to cancel the state at both receivers. For the weak interference regime, the sum capacity is characterized by independent dirty paper coding at two transmitters. Comparison between the state-dependent regular and Z-interference channels indicates that although with one interference-free link, Z-interference channel does not necessarily perform better, because the dirty paper coded interference can be useful to help to fully cancel the state via joint dirty paper coding between the transmitters.
机译：研究了一种状态相关的高斯Z干扰信道，其中发射机1和2希望向接收机1和2发送两个消息，而只有接收机1受发射机2的信号干扰。两个接收器都因相同但缩放比例不同的状态序列而损坏。假设状态信息在两个发送器中都是无因的。根据干扰的强度，将信道分为非常强，很强和很弱的干扰区域。通过在两个通道之间设计联合脏纸编码以消除两个接收器的状态，分别针对某些非常强的体制，在某些通道参数下表征了容量区域和容量区域边界上的点。对于弱干扰情况，总容量的特征是在两个发射机处进行独立的脏纸编码。状态相关的常规干扰通道和Z干扰通道之间的比较表明，尽管只有一条无干扰链路，但Z干扰通道不一定性能更好，因为脏纸编码干扰有助于通过关节完全消除状态。变送器之间的脏纸编码。

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