新型多媒体业务的蓬勃发展为当前网络资源分配带来了巨大的挑战。非正交多址技术（Non-Orthogonal Multiple Access, NOMA）在未来无线视频多播中的应用有很大的研究价值。NOMA通过信号的叠加传输和频谱复用方式，提高了系统的接入能力和频谱资源利用率。为了解决视频数据业务的激增与频谱资源的稀缺之间的矛盾，本文设计了基于压缩编码的图样分割多址（Pattern Division Multiple Access, PDMA）视频传输系统模型。通过综合考虑PDMA的多阶调制及其传输特性，本文提出了基于PDMA传输的多元Huffman（multivariate Huffman, mHuffman）编码，旨在提升资源利用率，减少频谱资源的消耗。仿真结果表明，在mHuffman-PDMA系统模型中进行视频数据传输，可以大大降低系统的误码率，节省传输时间，提升传输效率。

The rapid development of new multimedia services has brought great challenges to the current network resource allocation. Non-orthogonal multiple access (NOMA) has aroused research interest for its potential use in the future wireless video multicast. By means of signal superposition transmission and spectrum multiplexing, NOMA improves the access capability and spectrum resource utilization of the system. In order to solve the contradiction between the proliferation of video data services and the scarcity of spectrum resources, we propose a pattern division multiple access (PDMA) video transmission system model based on video compression coding. By comprehensively considering the multi-order modulation of PDMA, we also propose a multivariate Huffman coding (mHuffman) based on the transmission characteristics of PDMA, which aims to improve the resource utilization and reduce the consumption of spectrum resources. The simulation results show that the transmission of video data in the mHuffman-PDMA system model can greatly reduce the bit error rate (BER), save transmission time, and improve the transmission efficiency.