| 中波数字AM广播实现方案 |
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| 引用本文： | 邬正义,李旭明,吴乐南. 中波数字AM广播实现方案[J]. 电声技术, 2004, 0(10): 62-65 |
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| 作者姓名： | 邬正义 李旭明 吴乐南 |
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| 作者单位： | 常熟理工学院,自动控制系,江苏,常熟,215500;东南大学,无线电工程系,江苏,南京,210096;东南大学,无线电工程系,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金资助(60072013). |
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| 摘 要： | 提出一种上下兼容的中波数字广播系统方案。该方案的数字基带传输方式为COFDM，与DRM和IBOC相同，射频调制仍采用保留载波的双边带调幅，不需要对现有广播发射机进行改动或更换，接收机可沿用目前中波收音机的包络检波或采用相干解调，实现复杂度低，便于形成规模生产。讨论了该方案实现的关键技术，并给出了发展和应用前景。
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| 关 键 词： | 数字AM广播 DRM IBOC COFDM 双边带调幅 |
| 文章编号： | 1002-8684(2004)10-0062-04 |
| 修稿时间： | 2004-06-16 |
A Scheme of Digital AM Broadcasting in MW Band |
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| WU Zheng-yi ,,LI Xu-ming ,WU Le-nan. A Scheme of Digital AM Broadcasting in MW Band[J]. Audio Engineering, 2004, 0(10): 62-65 |
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| Authors: | WU Zheng-yi LI Xu-ming WU Le-nan |
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| Affiliation: | WU Zheng-yi 1,2,LI Xu-ming 2,WU Le-nan 2 |
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| Abstract: | A system of digital AM broadcasting in MW band compatible with traditional analogue AM broadcasting and all digital broadcasting in future is proposed.COFDM technique is adopted for digital base-band transmission in the scheme,which is also used in DRM or IBOC,and the double-sideband AM method in RF is retained.The existing broadcast transmitters need not to be changed or replaced.Receivers that use envelope detection or coher-ent demodulation of single sideband may be mass-produced.The key techniques for implementing the project and the applications of this system are particularly discussed. |
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| Keywords: | digital AM broadcasting DRM IBOC COFDM double-sideband AM |
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