一种新的球形译码检测器性能分析

摘要

The best performance can be obtained by using a detector based on a depth first sphere decoding detector in a MIMO system.However,the complexity changed often,and it is still an exponential function in-volving the modulation order and the number of anten-nas.In response to the complexity of depth first sphere decoding,and the possibility of cutting off a part of the signal,a receiving detector is designed.The concept of choosing a detector using an initial radius and using de-tection sequencing reduces complexity but could possibly cut some signal;we adopted the depth clipping function to avoid cutting signal.%在多输入多输出（MI MO ）系统中，基于深度优先球形译码检测器可以提供最优的性能，但其计算复杂度变换范围很大，而且仍然是天线数及调制阶数的指数函数。针对深度优先球形译码检测器复杂度较高和部分信号裁剪掉的可能性，设计出一种新的接收检测器，该检测器采用初始半径的选择和检测排序的思想降低复杂度，采用深度裁剪函数避免其部分信号被裁剪掉。