Effects of Clipping and Filtering on the Performance of OFDM
Effects of Clipping and Filtering on the Performance of OFDM
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DOI：
10.1109/4234.673657
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发表时间：
1998-05-01
期刊：
影响因子：
--
通讯作者：
Cimini, Leonard J., Jr.
中科院分区：
文献类型：
--
作者：
Li, Xiaodong;Cimini, Leonard J., Jr.
正交频分复用（OFDM）技术是无线通信领域的一项重要技术。然而，OFDM信号具有大的峰均包络功率比，这在通过诸如发射机功率放大器的非线性设备时可能导致显著失真。通过大量的计算机仿真，我们研究了限幅和滤波对OFDM系统性能的影响，包括功率谱密度、峰值因子和误码率。我们的研究结果表明，限幅和滤波是一种很有前途的技术，使用现实的线性放大器的OFDM信号的传输。
Orthogonal frequency division multiplexing (OFDM) is an attractive technique for wireless communication applications. However, an OFDM signal has a large peak-to-mean envelope power ratio, which can result in significant distortion when passed through a nonlinear device, such as a transmitter power amplifier. We investigate, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the crest factor, and the bit-error rate. Our results show that clipping and filtering is a promising technique for the transmission of OFDM signals using realistic linear amplifiers.