Fifth Generation (5G) communication systems will accommodate various kinds of data. There are two important problems in the 5G protocol, which have not been studied in depth. The first problem is the co-existence of heterogeneous communication standards; the second issue is to fuse information from different sources, for example, in cognitive communications. A new coding scheme, namely pattern exclusive codes (PECs), is proposed in this paper to resolve these two problems by inserting specific patterns (designated substrings) within data payloads to combine or fuse information streams from different sources. These patterns can be deemed as the frame cursors to mark the beginning and the end of a data string such that the frame-length field in a regular packet can be removed thereby. With the help of our proposed PECs, the packetless data transmission is feasible in the 5G communications. Moreover, the patterns can also serve as the identification sequences for users. Finally, crucial communication-performance related metrics regarding PECs, including peak-to-average-power ratio (PAPR) and coding efficiency, are investigated in this paper.

第五代（5G）通信系统将容纳各种数据。5G协议中存在两个尚未深入研究的重要问题。第一个问题是异构通信标准的共存。第二个问题是融合来自不同来源的信息，例如在认知交流中。为了解决这两个问题，本文提出了一种新的编码方案，即模式排他码（PEC），方法是在数据有效载荷内插入特定的模式（指定的子字符串），以合并或融合来自不同来源的信息流。这些模式可以看作是标记数据串开头和结尾的帧光标，从而可以删除常规数据包中的帧长字段。在我们建议的PEC的帮助下，无分组数据传输在5G通信中是可行的。此外，这些模式还可以用作用户的识别序列。最后，本文研究了与PEC有关的与通信性能有关的关键指标，包括峰均功率比（PAPR）和编码效率。