| 16DAPSK+OFDM及其在数字调幅广播中应用 |
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| 引用本文： | 束锋,吴乐南.16DAPSK+OFDM及其在数字调幅广播中应用[J].电路与系统学报,2001,6(3):68-71. |
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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项目(60072013) |
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| 摘 要： | 本文提出一种新的频域16DAPSK＋OFDM。并讨论它的频域差分调制和解调，然后在白高斯信道分析它的误比特性能。同时域16DASK＋OFDM相比，频域16DAPSK＋OFDM可用于信道特性随时间变化更快的应用。最后，在典型的调幅（AM）波段信道对两者误比特性能进行了仿真。结果表明，时域和频域16DPSK＋OFDM都可用于中短波信道。在中波信道，时域16DAPSK比例域16DAPSK性能要好，在短波信道，频域16DAPSK比时域16DAPSK性能要好。另外，两者调制和解调的计算复杂度基本一样，且都不需要信息道均衡。
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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 |
| 文章编号： | 1007-0249(2001)03-0068-04 |
| 修稿时间： | 2000年12月11 |
16 DAPSK-OFDM and Its Application in DAMB |
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| SHU Feng,WU Le-nan.16 DAPSK-OFDM and Its Application in DAMB[J].Journal of Circuits and Systems,2001,6(3):68-71. |
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| Authors: | SHU Feng WU Le-nan |
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| Abstract: | A new frequency-domain 16DAPSK+OFDM with its modulation and demodulation is proposed. Simulation has been conducted for BER performance in typical AM channels and the AWGN environment. Simulation results show that both frequency-domain and time-domain 16DAPSK+OFDM can be used in AM channels. In MW channel, performance of 16DAPSK+OFDM for time-domain is better than for frequency-domain; whilst in SW channel, performance for frequency-domain is better than for time-domain. Computational complexity in the process of modulation and demodulation is almost the same for both domains. Moreover, there is no need for channel-equalizer for both domains. |
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| Keywords: | DAPSK QAM OFDM DAMB |
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