SCMA codebook scheduling method based on beam domain channel

• Main Authors: FANG JIAQI, YANG CHANGRONG, WANG WENJIN, YOU LI, CHEN LINGPENG, GAO XIQI
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The invention provides a sparse code multiple access (SCMA) codebook scheduling method based on a beam domain channel. In the method, a base station pre-generates a group of SCMA codebooks adapting todifferent numbers of accessed users according to the number of resource blocks allocated to each user, and groups the users by considering the correlation of beam domain channels among different users, divides the users with strong correlation of the beam domain channels into the same group, and schedules the codebooks for the users by utilizing the sparse characteristic of the beam domain channels so as to reduce the interference of the users among the groups. According to the method, the codebook scheduling problem when the number of system access users is far greater than the number of system codewords is solved, and the system performance is improved on the premise of lower implementation complexity. 本发明提出了一种基于波束域信道的稀疏码多址接入码本调度方法。该方法中，基站根据为每个用户分配的资源块数，预生成一组适应不同接入用户数的SCMA码本，并考虑利用不同用户间波束域信道的相关性对用户进行分组，将波束域信道相关性