| 星上多载波解调技术研究 |
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| 引用本文： | 姚国义,何磊.星上多载波解调技术研究[J].无线电工程,2006,36(10):59-61. |
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| 作者姓名： | 姚国义 何磊 |
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| 作者单位： | 1. 中国电子科技集团公司第54研究所,河北,石家庄,050081
2. 河北广播电视大学,河北,石家庄,050071 |
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| 摘 要： | 新一代具有星上处理的卫星将急剧降低地球站的复杂度,星上多载波解调(MCD)技术就是在星上分离出各个信道然后再独立解调。研究了星上多路信号即FDMA/QPSK信号的多载波技术,这是一种重要的星上处理技术,它包括频分多路信号的FFT分路算法、频偏估计、多路QPSK信号的全数字化解调算法和解调算法中的位定时恢复方法等。对主要的关键技术进行了计算机仿真。
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| 关 键 词： | 星上处理 多载波解调(MCD) 数字化分路 数字化解调 |
| 收稿时间： | 2006-12-06 |
| 修稿时间： | 2005年12月6日 |
Study of On-board Multi-carrier Demodulation |
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| YAO Guo-yi,HE Lei.Study of On-board Multi-carrier Demodulation[J].Radio Engineering of China,2006,36(10):59-61. |
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| Authors: | YAO Guo-yi HE Lei |
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| Abstract: | The new generation of on-board satellites is conceived to involve a dramatic reduction in the earth station size and complexity.The operation of on-board MCD technique is to separate each individual channel and then to perform the independent demodulation.In this paper,we study on Multi-carrier Demodulation(MCD)of FDMA/QPSK signals,which is a very important on-board signal processing technique.The MCD includes such algorithms as FDMA signal FFT demultiplexing algorithm,fully digitized demodulation algorithm of FDMA/QPSK signals,and bit-timing synchronization in MCD,etc.Computer simulation experiments on the main key techniques have been done. |
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| Keywords: | on-board processing multi-carrier demodulation digital demultiplexing digitized demodulation |
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