| 基于DFT扩频的广义多载波频分多址上行链路传输方案——DFT-S-GMC |
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| 引用本文： | 李明齐,张小东,李元杰,周斌.基于DFT扩频的广义多载波频分多址上行链路传输方案——DFT-S-GMC[J].电信科学,2006,22(6):5-10. |
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| 作者姓名： | 李明齐 张小东 李元杰 周斌 |
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| 作者单位： | 上海无线通信研究中心,上海,200050 |
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| 摘 要： | 针对宽带移动通信上行链路传输,提出一种基于离散傅立叶变换(DFT)的广义多载波(GMC)频分多址方案--DFT-S-GMC.该传输方案采用DFT进行频域扩频,采用逆滤波器组变换(IFBT)实现频分复用和频分多址.理论分析和仿真表明,与现有主流上行多址方案(如OFDMA和DFT-S-OFDMA)相比,该方案具有较低的峰均比,并且对由上行用户间的定时和频率同步误差导致的多址干扰有较强的顽健性.
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| 关 键 词： | 频分多址 滤波器组 多载波 多址干扰 峰均比 |
| 收稿时间： | 2006-05-13 |
| 修稿时间： | 2006年5月13日 |
A DFT Spread Generalized Multi-Carrier Based FDMA Scheme for Uplink Transmission |
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| Li Mingqi,Zhang Xiaodong,Li Yuanjie,Zhou Bin.A DFT Spread Generalized Multi-Carrier Based FDMA Scheme for Uplink Transmission[J].Telecommunications Science,2006,22(6):5-10. |
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| Authors: | Li Mingqi Zhang Xiaodong Li Yuanjie Zhou Bin |
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| Abstract: | A DFT spread generalized multi-carrier (GMC) based frequency division multiple access (FDMA) scheme, i.e. DFT-S-GMC is proposed for uplink transmission of wideband mobile communication systems. The scheme achieves spreading gains in the frequency-domain by discrete fourier transform (DFT),and the frequency division multiplexing (FDM) and FDMA by inverse filter-bank transform (IFBT). By theoretical analysis and simulation results,it is shown that the proposed scheme has good peak-to-average power ratio (PAPR) performance and is more robust to the multi-access interference (MAI) than the existed main stream uplink schemes,e.g. OFDMA and DFT-S-OFDMA scheme. |
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| Keywords: | FDMA filter-bank multi-carrier MAI PAPR |
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