A New OFDM Transmission Scheme Using DFT Code Multiplexing(Wireless Communication Technology)

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概要

• 論文の詳細を見る

• We propose a new orthogonal frequency division multiplexing transmission scheme using orthogonal code multiplexing. This scheme makes all modulation symbols have the same reliability even in a frequency selective fading channel, through a distributed transmission of each symbol over the whole effective subcarriers using a distinct orthogonal code. As an appropriate set of orthogonal multiplexing codes, we use the set of discrete Fourier transform code sequences that hold the orthogonality irrespective of the length. Using this set, we also can greatly reduce the peak-to-average-power ratio (PAR) of the resulting signal. Simulation results show that the proposed scheme can significantly reduce the required signal-to-noise ratio at a given bit error rate over the existing schemes. The scheme can maintain the PAR within a reasonable range of about 6 dB even up to 512 subcarriers and works well even with PAR clipping of 1.5 dB.

• 社団法人電子情報通信学会の論文
• 2004-03-01

著者

• Oh Seong

  Ajou University

• SUNWOO Myung

  Ajou University

• Sunwoo M

  Ajou University

関連論文

• A Class of MIMO Systems Using Transmit Diversity Pre-Combining Scheme(Wireless Communication Technology)
• A New OFDM Transmission Scheme Using DFT Code Multiplexing(Wireless Communication Technology)
• An Interference-Canceller-Aided Code Acquisition Scheme for DS-CDMA Systems with Interference Cancellation(Wireless Communication Technology)

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