Radius update method based on spheroidal decoding algorithm

Example of the invention provides a radius update method based on spheroidal decoding algorithm, which relates to communication field. The method comprises: obtaining the current search hierarchy, initial value of radius, and the amounts of radius adjustment respectively corresponding to other searched hierarchy; based on distribution of non-center chi-square, calculating the total amounts of radius adjustment respectively corresponding to the current search hierarchy; based on initial value of the radius, the amounts of radius adjustment respectively corresponding to other searched hierarchy, and the total amounts of radius corresponding to unsearched hierarchy, calculating the radius of the current hierarchy. the radius update method provided by the example can calculate more accurate updated radius, thus to solve the problem that amplification of updated radius may bring more calculations of spheroidal decoding algorithm. 本发明实施例提供了种基于球形译码算法的半径更新方法，涉及通信领域。所述方法包括：获取当前搜索层级，半径初始值以及，在当前搜索层级前的其它已搜索层级各自对应的半径调整量；然