论文标题
非正交单播和多播的肮脏纸质编码率分解速率，部分CSIT
Dirty Paper Coded Rate-Splitting for Non-Orthogonal Unicast and Multicast Transmission with Partial CSIT
论文作者
论文摘要
一个非正交的单播和多播（NOUM）传输系统允许在同一时间频率资源块中与单播流共同传输到所有接收器的多播流。尽管具有完美的通道状态信息在发射器（CSIT）上具有完美通道状态信息的两种用户多端noum的容量是通过肮脏的纸质编码（DPC）辅助编码（SC）来实现的，但具有叠加的能力和能力实现策略，但具有部分csit的多端noum noum的能力实现策略。在这项工作中，我们专注于部分CSIT环境，并做出两个主要贡献。首先，我们表明，依赖于将单播消息拆分为通用和私有部件的线性预编码的速率分解（RS），将通用部分与多播消息一起编码和在发射器上线性的预编码，可以实现比DPC辅助的NOUM与partial csit更大的速率区域。其次，我们研究了与RS和DPC结合的肮脏纸质编码分解（DPCR）。我们表明，DPCRS辅助NOUM的速率区域已扩大到传统DPC辅助NOUM和与部分CSIT线性预编码的RS辅助NOUM的速率区域。
A Non-Orthogonal Unicast and Multicast (NOUM) transmission system allows a multicast stream intended to all receivers to be jointly transmitted with unicast streams in the same time-frequency resource blocks. While the capacity of the two-user multi-antenna NOUM with perfect Channel State Information at the Transmitter (CSIT) is known and achieved by Dirty Paper Coding (DPC)-assisted NOUM with Superposition Coding (SC), the capacity and the capacity-achieving strategy of the multi-antenna NOUM with partial CSIT remain unknown. In this work, we focus on the partial CSIT setting and make two major contributions. First, we show that linearly precoded Rate-Splitting (RS), relying on splitting unicast messages into common and private parts, encoding the common parts together with the multicast message and linearly precoding at the transmitter, can achieve larger rate regions than DPC-assisted NOUM with partial CSIT. Second, we study Dirty Paper Coded Rate-Splitting (DPCRS), that marries RS and DPC. We show that the rate region of DPCRS-assisted NOUM is enlarged beyond that of conventional DPC-assisted NOUM and that of linearly precoded RS-assisted NOUM with partial CSIT.
