LTE-A系统中球形译码检测算法研究

摘要

This paper researched the flow of sphere decoding algorithm and two common algorithm of initial radius selection, and a new type of sphere decoding algorithm based on threshold is proposed. This new algorithm , considering the influence of signal-to-noise ratio and channel condition number on detection algorithm , has lower sphere decoding complexity and ensures performance of sphere decoding. This algorithm has been applied to the LTE-TDD wireless integrated test instrument.%详细研究了球形译码算法流程以及两种常用的初始半径选择算法,提出了一种基于阈值的球形译码检测算法,充分考虑到信噪比以及信道条件数对检测算法的影响,在保证球形译码性能的前提下,降低球形译码算法复杂度.该算法已应用于TD-LTE无线综合测试仪表的开发中.