| 正交频分复用(OFDM)调制技术 |
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| 引用本文： | 张峻峰.正交频分复用(OFDM)调制技术[J].天津通信技术,1998(2). |
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| 作者姓名： | 张峻峰 |
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| 作者单位： | 天津大学 |
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| 摘 要： | 正交频分复用调制（ＯＦＤＭ）是一种信道利用率很高的调制方式，具有良好的抗衰落能力，可实现并行传送。它所发送的信号是由一组正交的正弦信号作为副载波，用码元周期为Ｔ的不归零方波作为基带码型调制而成的。其信号产生与解调的过程为ＩＤＦＴ／ＤＦＴ的变换过程。
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| 关 键 词： | 正交频分复用调制 并行传送 正交 不归零方波 |
Orthogonal Frequency Division Multiplexing (OFDM) Modulation Technology |
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| Abstract: | OFDM is a modulation method which was often used in the channels. It has better capability against the fading and can realized parallel transmission. The transmitted signals which were modulated is a group of orthogonal sine signals as subcarrier and non-regular zero square waves that the code elements period is T as baseband coded formats. The process of signals production and demodulation is a transform process of IDFT/DFT. |
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| Keywords: | OFDM Parallel transmission Orthogonal NRZ square waves |
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