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Enhanced sampling frequency offset resistance method based on precoding technique in W-band OFDM RoF systems
Optics Communications ( IF 2.2 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.optcom.2020.125711
Zhihua Zhou , Jing He , Yi Liu , Jie Ma , Yaoqiang Xiao

Abstract Precoding technique is proposed and experimental demonstrated to resist sampling frequency offset (SFO) in W-band OFDM RoF systems. Walsh–Hadamard transform (WHT)-precoding, discrete Hartley transform (DHT)-precoding, Zadoff–Chu transform (ZCT)-precoding, and orthogonal circulant matrix transform (OCT)-precoding are investigated and compared. SFO-induced inter-carrier interference (ICI) on each subcarrier of conventional OFDM and OFDM with precoding (precoded-OFDM) are theoretical analyzed. Experimental results indicate OFDM with OCT-precoding (OCT-OFDM) can obtain a remarkable resistance to the SFO-induced ICI in W-band OFDM RoF systems.

中文翻译:

W-band OFDM RoF系统中基于预编码技术的增强采样抗频偏方法

摘要 提出并实验证明了预编码技术可以抵抗W波段OFDM RoF系统中的采样频率偏移(SFO)。研究并比较了 Walsh-Hadamard 变换 (WHT) 预编码、离散 Hartley 变换 (DHT) 预编码、Zadoff-Chu 变换 (ZCT) 预编码和正交循环矩阵变换 (OCT) 预编码。对传统OFDM和预编码OFDM(precoded-OFDM)的每个子载波上的SFO引起的载波间干扰(ICI)进行了理论分析。实验结果表明,带有 OCT 预编码的 OFDM (OCT-OFDM) 可以在 W 波段 OFDM RoF 系统中获得对 SFO 引起的 ICI 的显着抵抗。
更新日期:2020-07-01
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