一种基于新训练序列的正交频分复用小区搜索方法

A Novel Cell Search Scheme for OFDM Cellular Systems Based on New Training Sequence

为了增加正交频分复用（0FDM）小区识别的数量，同时保持小区搜索的性能，设计了一种新的OFDM小区搜索方案．其核心思想是在载波上先加载称为“子载波模板”的伪随机序列，然后再加载频域差分序列．针对这种新的结构，该方案还设计了一种联合估计算法，可在性能保持不变的情况下，增加10～20倍识别小区的数量．

In order to increase the OFDM cell identification numbers as well as remain the cell search performance, a new scheme was proposed. The core idea is that the ＇sub-carrier mask index＇ is loaded before differential sequence is modulated on the sub-carrier. A jointly estimating algorithm is designed to improve the performance so the proposed scheme can identify 10 to 20 times the call identification numbers of the traditional scheme .