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OFDM 调制与解调

于 2022-01-23 发布 文件大小:641.78 kB
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循环前缀插入常用的正交频分复用 (OFDM) 系统作为一种方式为了减轻影响的码间干扰 (ISI)。它将复制 的结尾部分与逆快速傅里叶变换的 OFDM 符号开头 (IFFT) 数据包。通常的循环前缀长度是更长的时间 比色散信道完全消除 ISI 的长度。OFDM 调制因此大多是围绕着周围循环前缀: OFDM 调制包括 IFFT 操作和循环 前缀插入 ;OFDM 解调包括循环前缀去除和 FFT 操作。

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