| 带预处理的半定规划多用户检测器 |
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| 引用本文： | 穆学文,刘三阳,张亚玲. 带预处理的半定规划多用户检测器[J]. 西安电子科技大学学报(自然科学版), 2006, 33(1): 89-92 |
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| 作者姓名： | 穆学文 刘三阳 张亚玲 |
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| 作者单位： | [1]西安电子科技大学理学院,陕西西安710071 [2]西安科技大学计算机系,陕西西安710054 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 基于多用户检测问题的二次整数规划模型，提出了一种带预处理的半定规划多用户检测方法．该方法利用预处理方法把多用户检测问题的模型等价为一个规模较小的二次整数规划模型。给出简化模型的半定规划松弛，结合随机扰动方法得到多用户检测问题的次优解．这种方法改善了用户多时半定规划方法误码率高的状况，同时也缩短了直接利用半定规划方法的检测时间．
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| 关 键 词： | 多用户检测 半定规划松弛 二次整数规划 随机扰动方法 误码率 |
| 文章编号： | 1001-2400（2006）01-0089-04 |
| 收稿时间： | 2005-04-27 |
| 修稿时间： | 2005-04-27 |
A semidefinite programming multiuser detector with pretreatment |
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| MU Xue-wen,LIU San-yang,ZHANG Ya-ling. A semidefinite programming multiuser detector with pretreatment[J]. Journal of Xidian University, 2006, 33(1): 89-92 |
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| Authors: | MU Xue-wen LIU San-yang ZHANG Ya-ling |
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| Affiliation: | (1) School of Science, Xidian Univ., Xi′an 710071， China;(2) Dept. of Computer Science, Xi′an Science and Technology Univ., Xi′an 710054， China |
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| Abstract: | Based on the quadratic integral programming model of the multiuser detection problem, a detection strategy by the semidefinite programming method with pretreatment is presented. A pretreatment method is used tO obtain an equivalent quadratic integral model with a lesser scale. Then, we give the semidefinite programming relaxation for the equivalent quadratic integral model. Coupled with the randomized method, we obtain the suboptimal solution to the multiuser detection problem. Compared with the semidefinite programming method, our method has the advantages of lower bit error rate and lesser CPU time, which simulations have proved. |
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| Keywords: | multiuser detection semidefinite programming relaxation quadratic integral programming randomized method bit error rate |
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