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首页> 外文会议>IEEE Singapore International Conference on Communication Systems >Transmission of side information using pilot tones for OFDM systems over fading channels
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Transmission of side information using pilot tones for OFDM systems over fading channels

机译：使用VILOT音调在衰落通道上使用导频音的侧面信息传输

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Orthogonal Frequency Division Multiplexing (OFDM) is an attractive and effective technique for wireless communications. However, an OFDM signal has a large peak-to-average power ratio (PAPR), which will cause serious nonlinear distortion especially when the signal passes through a nonlinear system. Adaptive Symbol Selection Scheme (ASSS) is used to reduce the unwanted PAPR by selecting the adaptive OFDM signal with the smallest PAPR before transmitting. Because of the side information needed in ASSS, the effective data rate finally got in the receiver decreases. We develop a new modulation method using ASSS and channel estimation together, which can transmit the needed side information in the pilot tones made by channel estimation during the signal transmission. Our simulation results show that the method we proposed is a promising and valuable technique for reducing PAPR in OFDM signals.
机译：正交频分复用（OFDM）是一种有吸引力且有效的无线通信技术。然而，OFDM信号具有大的峰值平均功率比（PAPR），尤其是当信号通过非线性系统时造成严重的非线性变形。自适应符号选择方案（ASS）用于通过在发射之前选择具有最小PAPR的自适应OFDM信号来减少不需要的PAPR。由于ASS所需的侧面信息，因此有效的数据速率最终在接收器中降低。我们使用ASS和信道估计一起开发一种新的调制方法，其可以在信号传输期间通过信道估计所制作的导频音调中所需的侧信息。我们的仿真结果表明，我们提出的方法是对OFDM信号中的PAPR进行有前途和有价值的技术。

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