Adaptive Coupling Method Based on Optimal Subcarrier Spacing for OFDM System

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概要

• 論文の詳細を見る

• Orthogonal frequency division multiplexing (OFDM) is very sensitive to the frequency errors caused by phase noise and Doppler shift. These errors will disturb the orthogonality among subcarriers and cause intercarrier interference (ICI). A simple method to combat ICI is proposed in this letter. The main idea is to map each data symbol onto a couple of subcarriers rather to a single subcarrier. Different from the conventional adjacent coupling and symmetric coupling methods, the frequency diversity can be utilized more efficiently by the proposed adaptive coupling method based on optimal subcarrier spacing. Numerical results show that our proposed method provides a robust signal-to-noise ratio (SNR) improvement over the conventional coupling methods.

著者

• WANG Yi

  ChongQing University of Posts and Telecommunications (CQUPT)

• TANG Hong

  Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Post and Communications (CQUPT) and Chong Qing Electric Power Research Institute

• HOU Xing

  Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Post and Communications (CQUPT) and Chong Qing Electric Power Research Institute

• LONG Ken

  Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Post and Communications (CQUPT) and Chong Qing Electric Power Research Institute

• CHEN Qianbin

  Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Post and Communications (CQUPT) and Chong Qing Electric Power Research Institute

• ZHANG Zufan

  Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Post and Communications (CQUPT) and Chong Qing Electric Power Research Institute

関連論文

• Symmetric Extension DFT-Based Noise Variance Estimator in OFDMA Systems with Partial Frequency Response
• Adaptive Coupling Method Based on Optimal Subcarrier Spacing for OFDM System

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