因此，快速而又准确地检测授权用户信号是认知无线电系统的基础。
Thus, detecting the licensed user's signal quickly and accurately is the foundation of the CR system.
本论文研究的主要内容是认知无线电系统中动态频谱管理的频谱分配问题。
The main contents of this thesis is spectrum allocation of dynamic spectrum management in the cognitive radio system.
本发明实施例同时公开了一种认知无线电系统、BS及用户 终端CPE。
The embodiment of the invention also discloses a cognitive radio system, the BS and the customer premises equipment CPE.
检测主用户信号是否存在的频谱检测技术就成为认知无线电系统的关键技术。
It realizes same radio spectrum using by multi-users. So spectrum detection is the key technique for realization of cognitive radio.
频谱感知是认知无线电系统的关键技术之一，协作频谱感知能够提高频谱感知性能。
Spectrum sensing is one of the key technologies in cognitive radio, and cooperative spectrum sensing can improve the spectrum sensing performance.
该文首先对认知无线电系统中基于图论着色的频谱分配模型及其数学符号描述进行介绍；
This paper firstly introduce the cognitive radio system based on the spectrum allocation of graph coloring model and mathematical symbols descriptions;
本文首先对认知无线电系统这个大环境的背景、概念、国内外研究现状及关键技术做了详细的分析。
Firstly this thesis introduces the context and concept of cognitive radio, the key technologies of cognitive radio, and the research status at home and abroad on cognitive radio.
本文主要考虑择机频谱接入模式下的认知无线电系统，即认知用户只有在授权用户不活动时才可以占用频谱资源。
In this paper, we consider the situation that the user of the cognitive radio system can only user the spectrum resources when them are not occupied by the authorized user.
介绍了认知无线电系统中主要的频谱检测技术，对它们的基本原理、实现方法和优缺点等进行了详细分析和讨论。
The important spectrum sensing technologies of CR are introduced, their basic principles, methods and advantages and disadvantages to achieve such a detailed analysis and discussion.
由于认知无线电系统可能工作在非常宽的频带内，而且频谱一般不连续，所以数据传输方式必须能够自适应这种特性。
As cognitive radio system may work in very large bandwidth, and the spectrum is generally not continuous, so the data transmission must be adaptive to this feature.
认知无线电的频谱分配技术研究的是如何对检测到的空闲频谱资源进行有效的管理，是认知无线电系统的一项关键技术。
The spectrum allocation technology, which is one of the key technologies of cognitive radio, the research emphasis is how to manage the spectrum resource effectively.
认知无线电(CR)是一种智能的无线电通信系统，其智能主要来自于认知引擎。
Cognitive Radio (CR) is an intelligent wireless communication system, whose intelligence mostly comes from the cognitive engine.
文中最后从系统设计的角度，给出了整套军事认知无线电接收系统的解决方案和具体处理流程。
In the last part of the paper, the whole cognitive radio receiver system design and the process procedure are introduced.
认知无线电可以通过动态频谱接入技术来有效的提高频谱的利用率，而在动态频谱接入中信道选择策略的优劣直接影响着系统的性能。
Cognitive radio can effectively improve the utilization of spectrum through dynamic spectrum access technology, in which the channel selection affects directly the performance of the system.
认知无线电技术已经向“网络与系统”的框架转变，为增强认知能力、降低认知成本，协作手段成为必然。
The view of cognition is being upgraded from cognitive radio to cognitive network and system. The cooperation becomes a powerful tool to improve the capability of cognition and lower the cost.
认知无线电技术已经向“网络与系统”的框架转变，为增强认知能力、降低认知成本，协作手段成为必然。
The view of cognition is being upgraded from cognitive radio to cognitive network and system. The cooperation becomes a powerful tool to improve the capability of cognition and lower the cost.
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