Reconfigurable and Integrated Antennas for Cognitive Radio

用于认知无线电的可重构集成天线

• 批准号: EP/F017502/1
• 负责人: Peter Hall
• 金额: $ 55.78万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF017502%2F1
• 关键词: Reconfigurable; Integrated; Antennas; Cognitive; Radio

Cognitive radio (CR) is a revolutionary technology that aims for remarkable improvements in efficiency of spectrum usage. Originating from the concept of software defined radio (SDR), CR can be viewed as an extension of SDR in terms of environmental awareness. Basically, CR relies on a radio being able to sense whether a particular band is being used and, if it is not, to utilise the spectrum without interfering the transmission of other authorised users. If the primary user returns to the same band for transmission, the radio switches to another band, or stays in the same band, modifying its transmission power level or modulation scheme to avoid interference. Such agility to adapt or to change allows such the radio to perceive the world around it and learn from experience. Although the software and intelligence requirements of such a network have yet to be defined, the implications on the radio itself pose tremendous challenges. To achieve this capacity for spectrum agility, optimising for power, modulation, range and other communication parameters, an extremely flexible RF front end is vital. As such, the antenna front end challenges are immense, which are addressed in this proposal.

认知无线电（CR）是一种革命性的技术，旨在显着提高频谱使用效率。CR起源于软件无线电（SDR）的概念，可以被视为SDR在环境意识方面的扩展。基本上，CR依赖于无线电能够感知特定频带是否正在使用，如果没有使用，则在不干扰其他授权用户的传输的情况下使用频谱。如果主用户返回到相同的频带进行传输，则无线电切换到另一个频带，或者保持在相同的频带中，修改其传输功率电平或调制方案以避免干扰。这种适应或改变的敏捷性使这种无线电能够感知周围的世界并从经验中学习。虽然这种网络的软件和智能要求尚未确定，但对无线电本身的影响构成了巨大的挑战。为了实现这种频谱灵活性，优化功率，调制，范围和其他通信参数，一个非常灵活的RF前端是至关重要的。因此，天线前端的挑战是巨大的，这在本提案中得到了解决。