| 摘要: |
| 全数字解调是当前数字传输领域的应用热点。本文首先对全数字解调器的概念和特点、载波和定量同步算法进行了概述，然后针对一种QPSK调制方式的卫星信号，设计并实现了零中频结构的全数字解调器。 |
| 关键词: 卫星通信 卫星信号 全数字解调器 零中频结构 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| Development of A Low Bit Rate Satellite Signal Demodulator |
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| Abstract: |
| All-digital demodulation is a hotspot in the applied area of digital communication. This paper first presents an outline for the concept and characteristic of all-digital demodulation, and then gives a discussion on the algorithms used for synchronization of carrier and timing. Finally, for the purpose of low bit rate QPSK satellite signal, we introduce the design and implementation of an all-digital demodulator with zero-IF architecture. |
| Key words: Satellite Communication,Satellite Signal,All-digital Demodulator,Zero-IF Architecture |
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