On the Performance Analysis of One Tap Equalizers in Oversampled OFDM Systems

• 作者: Fahad Khan Hassan Ali
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: ONE TAP EQUALIZATION OVERSAMPLING Orthogonal Frequency Division Multiplexing Inverse Fast Fourier Transform
• 年，卷（期）: 2018,（9）
• 页码范围: 187-198
• 页数: 12页
• 分类号: TN91

摘要

Oversampling is commonly encountered in orthogonal frequency division multiplexing (OFDM) systems to ease various performance characteristics. In this paper, we investigate the performance and complexity of one tap zero-forcing (ZF) and minimum mean-square error (MMSE) equalizers in oversampled OFDM systems. Theoretical analysis and simulation results show that oversampling not only reduces the noise at equalizer output but also helps mitigate ill effects of spectral nulls. One tap equalizers therefore yield improved symbol-error-rate (SER) performance with the increase in oversampling rate, but at the expense of increased system bandwidth and modest complexity requirements.