| 时间反演系统中基于Barzilai-Borwein的共轭梯度检测算法 |
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| 引用本文： | 梁静雯,朱江. 时间反演系统中基于Barzilai-Borwein的共轭梯度检测算法[J]. 系统工程与电子技术, 2021, 43(2): 567-573. DOI: 10.12305/j.issn.1001-506X.2021.02.32 |
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| 作者姓名： | 梁静雯 朱江 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院, 重庆 400065 |
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| 基金项目： | 国家自然科学基金(61771084)资助课题。 |
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| 摘 要： | 针对时间反演多址系统中信道的相关性会导致多用户干扰的问题,以降低用户间干扰和算法复杂度为目标,提出基于Barzilai-Borwein的共轭梯度迭代检测算法.首先通过共轭梯度迭代两次找到最速下降方向,然后通过Barzilai-Borwein沿着共轭梯度搜索的方向继续迭代.仿真表明,所提算法收敛速度快于Barzilai-...
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| 关 键 词： | 时间反演多址 Barzilai-Borwein迭代算法 信号检测 低复杂度 |
| 收稿时间： | 2020-01-16 |
Conjugate gradient detection algorithm based on Barzilai-Borwein in time reversal system |
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| LIANG Jingwen,ZHU Jiang. Conjugate gradient detection algorithm based on Barzilai-Borwein in time reversal system[J]. System Engineering and Electronics, 2021, 43(2): 567-573. DOI: 10.12305/j.issn.1001-506X.2021.02.32 |
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| Authors: | LIANG Jingwen ZHU Jiang |
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| Affiliation: | School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: | Aiming at the problem of multi-user interference caused by channel correlation in the time inversion multiple-access system,in order to reduce the inter-user interference and the algorithm complexity,a conjugate gradient iterative detection algorithm based on Barzilai-Borwein is proposed.Firstly,the fastest descent direction is found by two iterations of conjugate gradient.And then,the iteration is continued by Barzilai-Borwein along the direction of conjugate gradient search.Simulation results show that the convergence speed of the proposed algorithm is faster than that of Barzilai-Borwein and conjugate gradient algorithm,and the complexity is lower than that of the conjugate gradient algorithm and the minimum mean square error(MMSE)algorithm,which is maintained at O(N 2). |
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| Keywords: | time reversal division multiple access Barzilai-Borwein iterative algorithm signal detection low complexity |
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