| 超宽带系统中基于认知的Rake接收机设计 |
| |
| 引用本文： | 齐丽娜,干宗良,朱洪波. 超宽带系统中基于认知的Rake接收机设计[J]. 中国电子科学研究院学报, 2012, 7(1): 6-9 |
| |
| 作者姓名： | 齐丽娜 干宗良 朱洪波 |
| |
| 作者单位： | 南京邮电大学江苏省无线通信重点实验室,江苏南京,210003 |
| |
| 基金项目： | 国家科技重大专项项目，江苏973项目 |
| |
| 摘 要： | 直接序列扩频超宽带（DS-UWB，directed．spread．spectrum ultra wide band）系统采用窄脉冲和扩频技术进行通信，由于带宽很宽，有可能与同频段窄带系统共存。当存在窄带干扰时，最优接收机为采用MMSE准则的Rake接收机，而不存在窄带干扰时，MRC合并算法Rake接收机为最优接收机。由...
|
| 关 键 词： | 直接序列扩频超宽带 认知无线电 窄带干扰 Rake接收机 |
Design of Rake Receiver for UWB Systems Based on Cognitive Radio |
| |
| QI Li-na,GAN Zong-liang,ZHU Hong-bo. Design of Rake Receiver for UWB Systems Based on Cognitive Radio[J]. Journal of China Academy of Electronics and Information Technology, 2012, 7(1): 6-9 |
| |
| Authors: | QI Li-na GAN Zong-liang ZHU Hong-bo |
| |
| Affiliation: | (College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China) |
| |
| Abstract: | Directed-Spread-Spectrum Ultra Wide Band(DS-UWB) is a technique that may coexistence with other radio systems using very short pulses and spread spectrum.When there is narrow band interfer-ence(NBI),the optimal receiver is MMSE-Rake receiver,and when there is no NBI,the optimal re-ceiver is Rake receiver with MRC algorithm.With the environment changing,the NBI does not exist all the time.In this case,both above receivers are not optimal.An adaptive finger selection strategy of the Rake receiver with cognitive radio(CR) technique is proposed,and the finger weights vector can be ad-justed by the decision variable obtained from the spectral analysis.The simulation results show that the performance of the system with the proposed receiver is better than the system with MMSE-Rake and MRC-Rake receiver. |
| |
| Keywords: | DS-UWB CR NBI Rake receiver |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
