成对协作网络的容量研究
On the Capacity of Pairwise Collaborative Networks
摘要：
我们推导出表达式的协作编码方案在两个发射机，两个接收机的成对协作网络（PCN），其中一个发射机和接收机对，即中继对，协助其他对，即源对，通过部分解码和转发发送的消息到预期的接收机的可实现的速率区域。中继对在处理私有消息时提供这种帮助。我们假设用户可以使用过去的信道输出，并且可以在同一时间和同一频带中发送和接收。在这种协作方案中，源对的发送器将其信息分成两个独立的部分。具有讽刺意味的是，中继对采用解码和前向编码来帮助源对传递其消息的一部分，并将解码后的消息与专用消息一起重新编码，该专用消息旨在发送给中继对的接收方，并广播结果。中继对的接收器解码这两个消息，检索私人消息，重新编码并将解码的消息发送到预期的目的地。我们还描述了高斯PCN的可达速率区域。最后，我们提供了数值结果来研究所涉及的对的利率权衡。数值结果表明，当中继对用户之间的信道增益较强时，协作会带来增益。它还表明，如果发射机之间或中继和源对的接收机之间的信道条件差，这样的合作是没有好处的。
英文摘要：
We derive expressions for the achievable rate region of a collaborative coding scheme in a two-transmitter, two-receiver Pairwise Collaborative Network (PCN) where one transmitter and receiver pair, namely relay pair, assists the other pair, namely the source pair, by partially decoding and forwarding the transmitted message to the intended receiver. The relay pair provides such assistance while handling a private message. We assume that users can use the past channel outputs and can transmit and receive at the same time and in the same frequency band. In this collaborative scheme, the transmitter of the source pair splits its information into two independent parts. Ironically, the relay pair employs the decode and forward coding to assist the source pair in delivering a part of its message and re-encodes the decoded message along with private message, which is intended to the receiver of the relay pair, and broadcasts the results. The receiver of the relay pair decodes both messages, retrieves the private message, re-encodes and transmits the decoded massage to the intended destination. We also characterize the achievable rate region for Gaussian PCN. Finally, we provide numerical results to study the rate trade off for the involved pairs. Numerical result shows that the collaboration offers gain when the channel gain between the users of the relay pair are strong. It also shows that if the channel conditions between transmitters or between the receivers of the relay and source pairs are poor, such a collaboration is not beneficial.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
