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OFDM系统同频干扰消除算法的研究

Study of co-channel interference cancellation algorithm in OFDM system
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摘要 在基于OFDM技术的宽带无线通信系统中,同频道干扰是影响系统性能的一个主要方面。提出一个新的同频道干扰消除算法,新算法使用信道估计时域插值输出的差分信号来做CCI消除,对信道估计的时域插值输出的差分信号在时间方向作平均,估计其受到CCI干扰的大小,并在信道估计的输出输入到FEC前,在信道估计的结果上消除不同大小CCI干扰的影响,从而有效提高了系统抗CCI的性能。 In wide band wireless communication based on OFDM effect system performance. In the paper, a new CCI cancellation technology, co-channel interference （CCI） is a main factor to algorithm is presented. The algorithm averages differential signal of time interpolation output of channel estimation in time direction, estimates CCI interference level, and cancels the effect of dif- ferent level CCI interference on channel estimation＇ s output before channel estimation＇ s output input to FEC. Therefore, anti-CCI performance is improved effectively.
作者 杨勇 李建新
机构地区 扬智电子科技(上海)有限公司
出处 《电视技术》 北大核心 2016年第7期104-106,143,共4页 Video Engineering
关键词 OFDM 同频干扰 信道估计 时域插值 OFDM CCI channel estimation time interpolation
分类号 TN915 [电子电信—通信与信息系统]
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参考文献7

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二级参考文献8

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电视技术
2016年 第7期

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