Cell Identification Scheme for OFDM Cellular Systems Based on a New Preamble Structure
A cell identification scheme for OFDM cellular systems is proposed, which uses only one OFDM symbol with several identical slots as preamble. After performing OFDM timing/frequency synchronization, the UE identifies its cell ID by a novel scheme composed of cell group identification and cell index identification. Each cell group is distinguished from others by a unique subcarrier mask, which is an msequence. It activates or deactivates a subset of the subcarriers. Furthermore, cells with different indices in the same cell group load different differentially coded sequences on the adjacent active subcarriers. The UE recognizes the cell-group-specific mask via power detection of the received frequency domain signal. Then it identifies the cell index from differential demodulation and detection of the cellindex- specific sequence. Simulation results show that the proposed scheme is able to support a very large number of cell IDs and it works well even in bad multi-cell environment.
OFDM cell ID identification cell search
Ming Ding Han-wen Luo Yun Wu Ren-mao Liu
Dept.of Electronic Engineering,Shanghai Jiaotong University Advanced R&D Centre,Sharp Electronics(Shanghai) Co.,Ltd.
国际会议
武汉
英文
2006-09-01（万方平台首次上网日期，不代表论文的发表时间）