正交频分复用系统中一种抗多径衰落的联合时频同步算法OA北大核心CSCDCSTPCD
Robust Timing and Frequency Synchronization under Multipath Fading Channel for Orthogonal Frequency Division Multiplexing Systems
在正交频分复用(Orthogonal frequency division multiplexing,OFDM)通信系统中提出了一种基于新颖训练序列的同步算法.该训练序列只使用了一个OFDM符号,并且具有中心对称和前后部分一致的双重结构.在进行完粗定时同步和小数倍频率同步后,使用逆快速傅里叶变换(IFFT)运算来进行精确的联合信道路径定时和整数倍频偏估计.IFFT运算使得算法复杂度得到较大简化并且估计速度增快.在精定时同步阶段,提出了信干比最大的…查看全部>>
A synchronization scheme for orthogonal frequency division multiplexing (OFDM) systems based on a novel training sequence was proposed. The training sequence consists of only one centrosymmetric OFDM symbol with two identical parts to achieve reliable timing and frequency accuracy in the time-domain. After coarse timing and fractional frequency synchronization achieved, a successful estimation was declared for both channel path timing and integer frequency o…查看全部>>
刘程贞;金蓬嘉;昊学英
上海航天电子有限公司,上海201821上海航天电子有限公司,上海201821中国空间技术研究院,北京100094
正交频分复用同步多径信道卫星通信
Orthogonal frequency division multiplexingSynchronizationMultipath channel Satellite communication
《中国空间科学技术》 2011 (6)
58-64,72,8
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