A Low-Complexity Synchronizer for OFDM-UWB-Based Vehicular Communications

作者：Yin, Xiuwen; Liu, Jianqi^*; Su, Yongfeng; Xiong, Xiaoming; Xiong, Guohua

来源：IEEE Access, 2017, 5: 7272-7284.

DOI：10.1109/ACCESS.2017.2697908

• MB-OFDM
• synchronization
• UWB
• vehicular communication
• overall architecture
• CFO

The high implementation complexity of multiband orthogonal frequency-division multiplexing (MB-OFDM) ultra-wideband (UWB) technology is the major hurdle for applying it to vehicular communications. This paper presents a comprehensive synchronizer with low complexity and high performance for the MB-OFDM UWB. A low-complex overall architecture is proposed, in which the sub-functions are divided into amplitude-detection-based functions and phase-detection-based functions. All of the amplitude-detection-based functions are implemented based on a simplified cross correlation based matched filter, and a serial structure-based auto-correlation block is designed exclusively for carrier frequency offset estimation. Several effective methods for the sub-functions are proposed based on the proposed overall architecture. Evaluation results show that the proposed synchronizer has high performance with low complexity.

• 出版日期2017
• 单位广东工业大学