| 非线性信道中IJF-OQPSK功率谱的扩散性能 |
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| 引用本文： | 孙仁琦,赵春明. 非线性信道中IJF-OQPSK功率谱的扩散性能[J]. 南京邮电大学学报(自然科学版), 1990, 0(1) |
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| 作者姓名： | 孙仁琦 赵春明 |
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| 作者单位： | 南京邮电学院无线电工程系，南京邮电学院无线电工程系 |
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| 摘 要： | 本文利用计算机模拟,讨论了在非线性信道中限带QPSK、限带OQPSK、IJF-QPSK、IJF-OQPSK功率谱的扩散性能。提出利用6GHz微波信道机的一个射频波道,采用IJF-OQPSK调制方式,可不改动信道机的限幅中频放大器和功率放大器,即可实现PCM三次群传输。实验测试结果与计算机模拟结果基本一致,说明数模兼容方案是可行的。
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| 关 键 词： | 数字微波接力系统 非线性信道 功率谱 QPSK |
Performance of IJF-OQPSK Power Spectrum Spreading in Nonlinear Channel |
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| Sun Renqi Zhao Chunming. Performance of IJF-OQPSK Power Spectrum Spreading in Nonlinear Channel[J]. JJournal of Nanjing University of Posts and Telecommunications, 1990, 0(1) |
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| Authors: | Sun Renqi Zhao Chunming |
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| Affiliation: | Department of Radio Engineering |
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| Abstract: | With the help of computer simulations and experiment, this paper gives the results that the power spectrum spreading caused by bandlimitation of IJF-OQPSK is smaller than that of other modulation techniques. The possibility of transmitting IJF-OQPSK modulated signal for PCM 480 channels in only one radio channel of 6 GHz analog microwave system with bandlimiter and saturating power amplifier is presented and then the compatible transmission of the digital and analog systems is realized. |
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| Keywords: | Digital microwave relay systems Non-linear channels Power spectrum QPSK |
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