Extremely fast spreading factor adaptation in spread-spectrum networks

扩频网络中极快的扩频因子自适应

• 批准号: 328481-2006
• 负责人: Lee, Daniel
• 金额: $ 1.82万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=338981
• 关键词: Extremely; fast; spreading; factor; adaptation

Wireless communication and networking services are penetrating Canadian society at an explosive rate, resulting in the engineering community setting ambitious goals to rapidly advance their capabilities.  Two aspects of future wireless services present particular challenges.  First, future wireless systems will need to service a wide variety of applications, including voice, high-speed internet access, real-time multimedia, etc.  Second, the multimedia will exhibit a high degree of temporal variation in its traffic intensity.  These challenges, together with the inherent limitation of wireless resources and the time-varying nature of wireless channels, call for efficient resource allocation and adaptation schemes. The objectives of the proposed research program are: 1) to design, analyze, integrate, and optimize extremely fast transmission rate adaptation schemes in wireless communication systems, and 2) to integrate these schemes into wireless networks and multimedia applications.       Dr. Lee's recent publications presented a spreading-code-based method by which a wireless link can adapt its data transmission rate extremely fast to the wireless channel condition. His preliminary work also shows that the rapid adaptation of data transmission rate to the channel condition can increase the data throughput, for a fixed bit error probability, by many orders of magnitude over the existing transmission technologies. Therefore, it is anticipated that the proposed research will lead to a wireless transmission system with dramatically increased data throughput, and the integration of other components of communication systems such as symbol content detection, error correction coding, and chip synchronization. Joint design and optimization of these components will result in a system that will dramatically improve network applications' quality of service, with particular focus on real-time multimedia in a wireless mobile network.

无线通信和网络服务正以爆炸性的速度渗透到加拿大社会中，导致工程界设定了雄心勃勃的目标，以迅速提高其能力。未来无线服务的两个方面提出了特别的挑战。首先，未来的无线系统将需要服务于各种各样的应用，包括语音、高速互联网接入、实时多媒体等。其次，多媒体业务的传输强度具有高度的时间变化性，这些挑战，再加上无线资源的固有限制和无线信道的时变特性，都需要有效的资源分配和自适应方案。建议的研究计划的目标是：1）设计，分析，集成，并优化在无线通信系统中的极快速传输速率自适应方案，和2）将这些方案集成到无线网络和多媒体应用。 博士Lee最近的出版物提出了一种基于扩频码的方法，通过该方法，无线链路可以非常快地使其数据传输速率适应无线信道条件。他的初步工作还表明，数据传输速率对信道条件的快速适应可以增加数据吞吐量，对于固定的比特错误概率，比现有的传输技术增加许多数量级。因此，可以预期，所提出的研究将导致无线传输系统的数据吞吐量显着增加，和通信系统的其他组件，如符号内容检测，纠错编码，和芯片同步的集成。这些组件的联合设计和优化将导致一个系统，将大大提高网络应用的服务质量，特别是在无线移动的网络中的实时多媒体。