| 基于正交频分复用的频域差分幅度相位调制 |
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| 引用本文： | 束锋,吴乐南.基于正交频分复用的频域差分幅度相位调制[J].电子与信息学报,2002,24(4):467-472. |
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| 作者姓名： | 束锋 吴乐南 |
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| 作者单位： | 东南大学无线电系,南京,210096 |
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| 基金项目： | 国家自然科学基金(60072013) |
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| 摘 要： | 该文提出一种基于频域的幅度两电平的DAPSK+OFDM,并讨论该调制方式在频域的差分调制和解调,然后给出它在白高斯信道的误比特性能公式。最后在典型的调幅(AM)波段信道对它和基于时域的DAPSK+OFDM的误比特性能进行了仿真。结果表明:在短波信道,频域的DAPSK+OFDM比时域的DAPSK+OFDM性能好;在中波信道,时域的DAPSK+OFDM比频域的DAPSK+OFDM性能好。因此,数字调幅广播系统在短波信道可采用频域DAPSK+OFDM,在中长波信道可采用时域DAPSK+OFDM
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| 关 键 词： | 差分幅度相位调制 正交振幅调制 正交频分复用 数字调幅广播 |
| 收稿时间： | 2000-12-6 |
| 修稿时间： | 2000年12月6日 |
Frequency-domain DAPSK+OFDM |
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| Shu Feng,Wu Lenan.Frequency-domain DAPSK+OFDM[J].Journal of Electronics & Information Technology,2002,24(4):467-472. |
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| Authors: | Shu Feng Wu Lenan |
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| Affiliation: | Department of Radio Engineering Southeast University Nanjing 210096 China |
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| Abstract: | In this paper, a new frequency-domain DAPSK+OFDM is proposed . Its modulation and demodulation are discussed, and its BER performance is analysed in AWGN channel. In the case of the typical AM channel, the simulation results indicate that the BER performance of frequency-domain DAPSK+OFDM is better than that of time-domain DAPSK+OFDM in Short Wave (SW) channel but poorer in Medium Wave (MW) channel. In short, it is reasonable to use frequency-domain DAPSK+OFDM in SW channel and time-domain DAPSK+OFDM in MW and Long Wave (LW) channel. |
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| Keywords: | Differential amplitude phase shift keying Quadrature amplitude modulation Orthogonal frequency division multiplexing Digital amplitude modulation broadcast |
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