Linearized Constant Peak-Power Coded OFDM Transmission for Brodband Wireless Access Systems

• UWANO Shuta

  NTT Network Service System Laboratories

• MATSUMOTO Yoichi

  NTT Network Service System Laboratories

• MIZOGUCHI Masato

  NTT Access Network Service Systems Laboratories

• UMEHIRA Masahiro

  NTT Network Service System Laboratories

抄録

Orthogonal frequency division multiplexing (OFDM) signals suffer nonlinear distortion within the transmitter, in the high-power amplifiers in particular. This paper proposes a nonlinear distortion compensation technique for OFDM signals, which incorporates a baseband predistortion with a constant peak-power OFDM (CP-OFDM). CP-OFDM fixes the envelope-peak amplitude to a constant value while maintaining the linearity of the inverse fast Fourier transform (IFFT) outputs; consequently, the baseband predistorter entirely compensates the nonlinear distortion. Simulation and experimental results verify that the proposed technique significantly reduces out-of-band power emission and adjacent channel interference (ACI) more than 10 dB respectively.

収録刊行物

• IEICE transactions on communications

  IEICE transactions on communications 82 (12), 1932-1938, 1999-12-01

  一般社団法人電子情報通信学会

キーワード

• OFDM
• PAPR
• nonlinear distortion
• predistorter
• out-of-band emission

詳細情報

• CRID: 1572824502324457856
• NII論文ID: 110003218321
• NII書誌ID: AA10826261
• ISSN: 09168516
• 本文言語コード: en
• データソース種別:
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