协同分集与多包接收相结合的分布式并发无线通信关键技术研究

项目名称： 协同分集与多包接收相结合的分布式并发无线通信关键技术研究

项目编号： No.61202484

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 计算机科学学科

项目作者： 吕绍和

作者单位： 中国人民解放军国防科学技术大学

项目金额： 24万元

中文摘要： 现有无线网络无法满足日益增长的通信需求。干扰是制约无线网络性能的主要因素，多包接收是处理干扰的重要思路，课题组在这方面已取得部分研究成果。但现有多包接收技术仅利用了单点的接收能力，存在严格的并发约束。本申请围绕网络视角下如何提高并充分利用多包接收能力的问题，结合无线网络环境提供的协作机会，研究新型分布式并发无线通信机制的关键技术：(1) 研究基于协同分集的多包接收技术，设计支持并发传输的协作策略，从而建立协同分集与多包接收相结合的并发传输机制；(2) 探索细粒度的信道刻画与感知机制，设计并发无线通信的分布式接入控制策略。本申请立足于无线传输技术的最新进展，突破单点多包接收能力的局限性，提出利用协作促进并发的新思路；突破传统的信道忙/闲二值状态模型的局限性，提出利用细粒度信道状态信息支持并发通信的新思路。研究成果将为充分利用无线信道、显著提升网络性能提供新的技术途径，具有良好的应用前景。

中文关键词： 无线通信；干扰抵消；流水竞争；行为识别；传输协调

英文摘要： As the data communication demand increase quickly, the available wireless network technologies cannot meet the requirement for future applications. The capacity of a modern wireless communication system is interference-limited. Multi-packet reception (MPR) is a promising progress at the physical layer to combat the interference. We have studied the design of MPR techniques for several years and find that, as the available MPR techniques only take advantage of the packet reception capability at a single node, there are strict constraints for feasible simultaneous transmissions. To improve and effectively utilize the MPR capability in wireless networks, we will study the design of a distributed cooperative communication system. (1) We propose a novel cooperative diversity-based MPR technique and design the node cooperation mechanism, i.e., cooperative partner selection etc., according to the requirements of concurrent transmission. (2) In order to build a distributed access control scheme, we establish a fine-grained channel state model, propose a powerful channel sensing mechanism to accurately capture the channel condition, and design a distributed policy to coordinate the link transmissions with interference tolerance to some extent. Our work will finally present a novel communication system, by integrating coo

英文关键词： wireless communication；interference cancellation；pipeline contention；action recognition；transmission coordination