| WiMAX上行功率控制中分集合并研究 |
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| 引用本文： | 黎海涛,吕海坤,袁海英,周艳慧. WiMAX上行功率控制中分集合并研究[J]. 电子科技大学学报(自然科学版), 2014, 43(3): 369-374. DOI: 10.3969/j.issn.1001-0548.2014.03.009 |
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| 作者姓名： | 黎海涛 吕海坤 袁海英 周艳慧 |
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| 作者单位： | 1.北京工业大学电子信息与控制工程学院 北京 朝阳区 100124; |
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| 基金项目： | 国家自然科学基金(61001049); 北京市自然科学基金(4112012) |
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| 摘 要： | WiMAX上行链路采用功率控制提高系统容量和链路质量，在基于信号干扰噪声比(SINR)平衡准则的功率控制中，同道干扰和基站端天线合并算法对用于功率控制的SINR有重要影响. 首先构建了WiMAX同道干扰模型，根据该模型推导出功率控制中SINR的中断概率; 然后，针对基站端天线合并算法对SINR中断概率的影响，提出硬/软限幅合并算法. 仿真结果表明，提出的合并算法能够有效抑制同道干扰，降低功率控制中SINR的中断概率，改善WiMAX上行功率控制性能.
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| 关 键 词： | 同道干扰 分集合并 功率控制 信号干扰噪声比 WiMAX |
| 收稿时间： | 2013-06-08 |
Research on Diversity Combining for WiMAX Uplink Power Control |
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| Affiliation: | 1.College of Electronic Information and Control Engineering,Beijing University of Technology Chaoyang Beijing 100124;2.The State Administration of Radio Film and Television Xicheng Beijing 100866 |
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| Abstract: | Power control is efficiently utilized to improve WiMAX system capacity. For the signal interference and noise ratio (SINR) balance criterion based power control technique, the co-channel interference and the diversity combination of base station antenna have important effect on the SINR. In this paper, co-channel interference (CCI) model for WiMAX networks is presented, the outage probability of SINR with respect to power control is derived based on the CCI model and finally, hard/soft limiting combining algorithms are proposed to reduce interference. Simulation results show that the proposed combining algorithms can suppress the co-channel interference and reduce the outage probability of SINR, so that the power control performance of WiMAX uplink can be improved. |
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