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新型的IEEE 802.11n联合符号定时同步与细频偏估计算法
  • ISSN号：1007-5321
  • 期刊名称：《北京邮电大学学报》
  • 时间：0
  • 分类：TN911.22[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]北京邮电大学信息安全中心,北京100876, [2]北方工业大学信息学院,北京100041, [3]北京安码科技有限公司,北京100876
  • 相关基金：国家自然科学基金项目（61121061）; 北京市教委面上项目（KM201110009003）
作者： 黄明[1,2,3], 曾勇波[2], 李争平[2], 罗守山[1,3], 许成谦[1]
关键词： MIMO-OFDM, 无线局域网, 循环移位延时, 同步, MIMO-OFDM , IEEE 802. 11 n , cyclic shift delay, synchronization
中文摘要：

在以MIMO-OFDM为基础的IEEE 802.11n无线局域网系统中,引入循环移位延时（CSD）以区分不同数据流上的数据,但也给同步带来了难题.若以训练序列与接收信号相关,造成的伪相关现象会导致定时不准,影响接收机的性能.为此,通过分析802.11n所定义的前导符号结构特点和CSD的影响,提出了新型的802.11n联合符号定时同步与细频偏估计算法.仿真结果表明,其优点是不受频偏的影响,并能较好地抑制前导符号运算中伪相关结果的产生,提高检测的准确度.

英文摘要：

The introduction of cyclic shift delay （CSD） is used in IEEE 802.11 n to distinguish different spatial streams, however it poses a challenge to synchronization. The traditional synchronization methods, which utilize the cross-correlation between the local training sequence and the received signal, will cause many spurious peaks and result in deteriorated synchronization performance. A new joint symbol synchro- nization and fine frequency offset estimation algorithm is proposed. It exploits the structure of IEEE 802. 11 n preamble and adopts a delay-correlation algorithm to eliminate the effect of CSD. The proposed algo- rithm has advantages in avoiding the effect of carrier frequency offset, suppressing the generation of spuri- ous peak results and improving the detection accuracy.

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期刊信息
  • 《北京邮电大学学报》
  • 北大核心期刊（2011版）
  • 主管单位:教育部
  • 主办单位:北京邮电大学
  • 主编：刘杰
  • 地址：北京海淀区西土城路10号195信箱
  • 邮编：100876
  • 邮箱：byxb@bupt.edu.cn
  • 电话：010-62281995 62282742
  • 国际标准刊号：ISSN：1007-5321
  • 国内统一刊号：ISSN：11-3570/TN
  • 邮发代号:2-648
  • 获奖情况:
  • 美国工程信息公司（Ei）数据库收录期刊,1999年全国优秀高等学校自然科学学报及教育部优秀...,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:7684