提出一种针对IEEE 802.16e宽带正交频分复用多接入(OFDMA)工作模式的小区搜索算法.算法分为下行帧头检测和小区标识识别2个步骤.充分利用下行帧前导字的周期性,提出一种新颖的基于频域欧氏距离的帧头检测算法,有效地提高了检测的鲁棒性.提出一种相关窗长度自适应的小区标识识别算法,大大缩短了检测和识别时间.系统仿真结果表明,该算法具有较高的鲁棒性和搜索效率,是一种适合于IEEE 802.16e及其他OFDMA蜂窝系统的高效小区搜索算法.
A novel cell search algorithm for IEEE 802.16e orthogonal frequency division multiplexing access(OFDMA) systems was proposed.The algorithm has two steps,i.e.downlink frame detection and cell ID identification.Based on the Euclidean distance in frequency domain,the frame detection algorithm considers the periodicity of the downlink preamble in time domain,thus efficiently improves the robustness of the detection procedure.A cell ID identification algorithm with adaptive-length correlator was proposed to grea...