Performance of Decision Feedback Differential Detection for ADQAM-OFDM in High Mobility Environments
Authors: 
Juan Wu, Yue Lei Xie, Shan OuyangAuthors Info & Claims
Article No.: 109, Pages 1 - 7
Abstract
In this paper, we propose a decision feedback differential detection (DF-DD) solution for orthogonal frequency division multiplexing (OFDM) system with angle differential quadrature amplitude modulation (ADQAM) scheme to reduce the inter-subcarrier interference (ICI) emerged in high mobility environments. Compared to the conventional differential detection (CDD), the proposed scheme can improve the system performance. A detailed performance investigation is made among the ADQAM-OFDM, DAPSK-OFDM, and coherent QAM-OFDM in addtive white Gaussian noise channels, multipath channels, and time-varying channels. Simulation results show that the proposed scheme is about 3 dB better than the conventional differential detection in high mobility environments. It is further suggested that ADQAM-OFDM technology is more suitable for high mobility environments.
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Published In
December 2019
870 pages
ISBN:9781450372930
DOI:10.1145/3386415
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Published: 30 May 2020
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ICITEE-2019
ICITEE-2019: 2nd International Conference on Information Technologies and Electrical Engineering
December 6 - 7, 2019
Hunan, Zhuzhou, China
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