首页> 外文会议>Proceedings of 2009 2nd IEEE international conference on broadband network amp; multimedia technology >AN IMPROVED CARRIER FREQUENCY SYNCHRONIZATION ALGORITHM WITH SPATIAL DIVERSITY IN MIMO-OFDM SYSTEM
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AN IMPROVED CARRIER FREQUENCY SYNCHRONIZATION ALGORITHM WITH SPATIAL DIVERSITY IN MIMO-OFDM SYSTEM

机译:MIMO-OFDM系统中具有空间多样性的改进载波频率同步算法

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Carrier frequency synchronization is important in MIMO-OFDM systems. Any carrier frequency offset will cause a loss of subcarrier orthogonality which results in ICI and hence performance degrades severely. In this paper, a preamble structure for MIMO-OFDM systems is proposed. Based on the structure, the carrier frequency synchronization algorithm in burst data transmission for MIMO-OFDM systems is improved. The paper investigates the value of the improved algorithm with transmit and receive diversities for carrier synchronization in MIMO-OFDM systems. The simulation results show that the carrier synchronization performance in MIMO-OFDM systems with the improved algorithm exploiting transmit and receive diversity is efficient and robust, especially in low signal-to-noise ratio condition.
机译:载波频率同步在MIMO-OFDM系统中很重要。任何载波频率偏移都将导致子载波正交性损失,从而导致ICI,因此性能严重下降。本文提出了一种MIMO-OFDM系统的前导码结构。基于该结构,改进了MIMO-OFDM系统突发数据传输中的载频同步算法。本文研究了具有发送和接收分集的改进算法对于MIMO-OFDM系统中载波同步的价值。仿真结果表明,采用改进的算法利用发射和接收分集的MIMO-OFDM系统中的载波同步性能是有效和鲁棒的,特别是在低信噪比条件下。

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