| 基于V-BLAST的数字—模拟域混合预编码技术在多用户大规模MIMO中的应用 |
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| 引用本文： | 张帅,战金龙,王曼,李敏捷.基于V-BLAST的数字—模拟域混合预编码技术在多用户大规模MIMO中的应用[J].电信科学,2016,32(10):50-55. |
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| 作者姓名： | 张帅 战金龙 王曼 李敏捷 |
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| 作者单位： | 西安邮电大学通信与信息工程学院，陕西 西安710121 |
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| 基金项目： | 国家高技术研究发展计划（“863”计划）基金资助项目;国家科技重大专项基金资助项目;陕西省自然科学基金资助项目;陕西省国际交流资助项目 |
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| 摘 要： | 在大规模MIMO 系统中，全复杂度单一基带预编码（如全复杂度破零预编码FC-ZF）需要与天线阵元数目相同的射频链路，进而以高复杂度的硬件实施为代价，混合预编码（HP）技术可以大大降低射频链路数，且性能上接近全复杂度单一基带预编码技术，因此HP技术具有较高的研究价值。提出的自适应数字—模拟域混合预编码（自适应混合预编码/AHP）技术较传统数字—模拟域混合预编码（传统混合预编码）技术可以进一步有效地降低硬件的复杂度，并将其与V-BLAST技术相结合，可以同时获得阵列增益和复用增益。仿真结果表明，提出的方案具有较高的频谱效率、较低的硬件复杂度及比较理想的误码率性能。
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| 关 键 词： | 大规模MIMO V-BLAST 混合预编码 FC-ZF AHP |
Digital and analog hybrid precoding technology combined with V-BLAST in multi-user massive MIMO system |
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| Shuai ZHANG,Jinlong ZHAN,Man WANG,Minjie LI.Digital and analog hybrid precoding technology combined with V-BLAST in multi-user massive MIMO system[J].Telecommunications Science,2016,32(10):50-55. |
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| Authors: | Shuai ZHANG Jinlong ZHAN Man WANG Minjie LI |
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| Affiliation: | School of Telecommunication and Information Engineering, Xi'an University of Posts＆ Telecommunications, Xi'an 710121, China |
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| Abstract: | In the massive MIMO system, the only full digital baseband precoding（FD-BP）scheme（such as full complexity zero forcing）requires the same number of radio frequency（RF）chains as the number of antenna elements, which leads to extreme high hardware cost, the hybrid precoding can reduce the number of RF chain heavily and approach the performance of the FD-BP, so the hybrid precoding for massive MIMO is necessary and worth studying. The adaptive digital and analog hybrid precoding（AHP）can further reduce the hardware complexity compared with the conventional digital and analog hybrid precoding （conventional hybrid precoding）and which combined with V-BLAST can get the array gain and multiplexing gain simultaneously. Simulation results confirm the proposed scheme can obtain the higher spectral efficiency, the lower hardware complexity and more ideal BER performance. |
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| Keywords: | massive MIMO V-BLAST hybrid precoding full complexity zero forcing AHP |
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