Complexity Efficient Least Squares Estimation of Frequency Offsets for DVB-C2 OFDM Systems

IEEE Access

Yong-An Jung¹  Young-Hwan You¹  Joon-Yub Kim² 

[1] Department of Computer Engineering, Sejong University, Seoul, South Korea;Department of Electronics Engineering, College of Electronics and Information Engineering, Sejong University, Seoul, South Korea;

关键词: Orthogonal frequency division multiplexing;    DVB-C2;    carrier frequency offset;    sampling frequency offset;    pilot grouping;   

DOI  :  10.1109/ACCESS.2018.2844800

来源: DOAJ

【 摘 要 】

In this paper, we propose an efficient least squares estimation (LSE) of carrier frequency offset (CFO) and sampling frequency offset (SFO) in a second generation digital transmission system for cable system using orthogonal frequency division multiplexing. For this purpose, non-uniformly distributed continual pilots (CPs) are used for CFO and SFO synchronization, which are grouped into subsets to make the proposed LSE scheme unbiased. Numerical simulations are carried out to assess the performance of the proposed LSE scheme as well as to compare it against the conventional schemes fully using CPs. It has confirmed that the proposed LSE scheme works well in an unbiased fashion with a reduced complexity, compared with the conventional schemes.

【 授权许可】

Unknown