Spatial Graph Coupling for Wireless Communications

提出了一种新的多终端信道信息传输方法。在该方法中，以多个独立数据流的形式发送信息，所述多个独立数据流在无线信道中耦合到可以使用低复杂度迭代接收器解码的结构中，从而允许简单的实现。我们最近的研究结果证明，所提出的技术实现了高斯多址信道的容量，即使在等速率和功率传输的情况下，提供了一个几乎通用的方式联合解码的信号。该项目的目的是利用新的调制格式来建立用于多终端信道上的通信的实用算法，其中一组终端利用用于信号的发送和接收的协调和合作来与另一组终端通信。终端合作提供了一种可能性，大大增加网络吞吐量，而不完全依赖于昂贵的带宽和功率资源。

A novel approach to information transmission over multi-terminal channels is proposed. In this approach, the information is transmitted in the form of multiple independent data streams that couple in the wireless channel into structures that can be decoded using a low-complexity iterative receiver allowing for a simple implementation. Our recent results prove that the proposed technique achieves the capacity of the Gaussian multiple-access channel even for the case of equal rate and power transmissions providing a nearly universal way for joint decoding of signals. The objective of the project is to utilize the novel modulation format to establish practical algorithms for communication over multi-terminal channels in which a group of terminals communicates to another group of terminals utilizing coordination and cooperation for transmission and reception of signals. Terminal cooperation provides a possibility to substantially increase network throughput without relying exclusively on the costly bandwidth and power resources.