Towards a Mathematical Theory of Space-Time Codes for Multi-Antenna Wireless Communication

多天线无线通信空时码的数学理论

• 批准号: 0434410
• 负责人: Mahesh Varanasi
• 金额: --
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-15 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0434410&HistoricalAwards=false
• 关键词: Towards; Mathematical; Theory; Space; Time

AbstractIt is expected that future generations of wireless communicationsystems will provide a wide variety of services such as voice,video, high speed data, and interactive multimedia for a varietyof users ranging from the stationary to the highly mobile --- with speedsranging from the pedestrian to high vehicular speeds --- and in a widerange of outdoor (urban downtown to rural) as well as indoor(homes, office buildings, factories, etc.) propagation environmentscommonly encountered in everyday life. Battery limitations inhand-held devices or laptops and the scarcity of bandwidth relative to theambitions of such services dictate the need for designing systems in whichthese resources must be used as efficiently as possible.This project will focus on developing amathematical theory of two-dimensional ``space-time'' codes basedon algebraic number theory for reliable, robust andresource-efficient data transmission over multi-antenna wirelesscommunication links. Robustness of performance to a variety ofchannel conditions will be emphasized by considering general codedesign criteria as will problems related to efficientdecodability. Scalable, high performance space-time codes that canbe dynamically adapted to changing channel conditions due tochanges in propagation environments, scattering geometries, and usermobility will be investigated. Questions of both existenceand construction will be pursued. A new level of generality isintroduced in this project so that knowledge acquiredfor code design for one model can be applied to other models.The long history of mathematics shows that the very level ofgenerality itself can be a guide to what good codes should looklike.

未来几代无线通信系统将为从静止到高度移动的的各种用户提供诸如语音、视频、高速数据和交互式多媒体的各种各样的服务，用户的速度从步行到高速车辆，用户的移动范围从室外到室外。（市区到农村）以及室内（住宅、办公楼、工厂等）在日常生活中经常遇到的传播环境。手持设备或笔记本电脑的电池限制和相对于这些服务的野心的带宽的稀缺性决定了设计这些资源必须尽可能有效地使用的系统的需要。本项目将集中于发展基于代数数论的二维“空时”码的数学理论，用于在多天线无线通信链路上进行可靠的、鲁棒的和资源有效的数据传输。通过考虑一般的码设计标准，以及与有效可解码性相关的问题，将强调性能对各种信道条件的鲁棒性。可扩展的，高性能的空时码，可以动态地适应不断变化的信道条件，由于传播环境，散射的几何形状，和用户移动性的变化将被研究。存在和建设的问题将被追求。在这个项目中引入了一个新的通用性水平，这样一个模型的代码设计所获得的知识可以应用于其他模型。数学的悠久历史表明，通用性本身的水平可以指导好的代码应该是什么样子。