Efficient Variable Modulation Scheme Based on Codebook in the MIMO-OFDM System

نویسندگان

  • Yong-Jun Kim
  • Jae-Hyun Ro
  • Chang-Bin Ha
  • Hyoung-Kyu Song
چکیده

Because current wireless communication requires high reliability in a limited bandwidth environment, this paper proposes the variable modulation scheme based on the codebook. The variable modulation scheme adjusts transmission power using the codebook in accordance with channel state. Also, if the codebook is composed of many bits, the reliability is more improved by the proposed scheme. The simulation results show that the performance of proposed scheme has better reliability than the the performance of conventional scheme. Keywords—MIMO-OFDM, variable modulation, codebook, channel state.

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تاریخ انتشار 2015