文章介绍了短波接入通信网中用于提升小功率电台入网性能的上行空间分集接收技术。首先分析了空间分集接收的基本原理,然后给出了基于软值合并和硬值合并的空间分集接收实现方案,并比较了两者的优缺点。最后总结了实现上行空间分集接收的关键技术,指出了大量用户采用分集接收方式入网时需要解决的问题。 The article introduces the uplink space diversity reception technology used in shortwave access communication network to improve the network performance of low power stations. Firstly, the basic principle of spatial diversity reception is analyzed. Then the scheme of spatial diversity reception based on soft value combining and hard combining is given, and the advantages and disadvantages of the two are compared. Finally, the key technologies to realize the uplink spatial diversity reception are summarized, and the problems to be solved when a large number of users access the network with diversity reception are pointed out.