We propose a time synchronization method which is applicable to both offset quadrature amplitude modulation based filter-bank multicarrier (FBMC-OQAM) system and quadrature amplitude modulation based filter-bank multicarrier (FBMC-QAM) system. Based on the relation between the transmitted data symbols and FBMC signal, we design the scattered symbols to make a specific time domain region empty. Then, we insert the preamble in that region so as to transmit it perfectly. The performance of the proposed synchronization method is compared with the conventional time synchronization methods for the FBMC systems in terms of root mean square error (RMSE) of symbol timing offset (STO), bit error ratio (BER) and correctly detected data bit ratio per frame. Since the proposed method can reduce the resource usage for the synchronization, the resources for data transmission can be increased, thereby improving the spectral efficiency of the FBMC systems.
Bibliographical noteFunding Information:
Manuscript received December 30, 2019; revised April 30, 2020; accepted May 30, 2020. Date of publication June 9, 2020; date of current version September 16, 2020. This work was supported by the Institute for Information and Communications Technology Promotion (IITP) grant funded by the Korea Government (MSIP) (2016-0-00181-004, Development on the core technologies on transmission, modulation and coding with low-power and low-complexity for massive connectivity in the IoT environment). The associate editor coordinating the review of this article and approving it for publication was M. A. A. Imran. (Corresponding author: Chungyong Lee.) Bongsung Seo and Chungyong Lee are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: firstname.lastname@example.org; email@example.com).
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering