Low complexity delay-tolerant space-time block coding

低复杂度延迟容忍空时分组编码

• 批准号: EP/H016945/1
• 负责人: Fu-Chun Zheng
• 金额: $ 45.76万
• 依托单位: University of Reading
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FH016945%2F1
• 关键词: Low; complexity; delay; tolerant; space

Future wireless systems are expected to involve a plethora of small, low-cost communication nodes which will be widely distributed in the infrastructure of cities to provide truly pervasive and seamless communication and other services such as sensor networks. Perhaps the most fundamental challenge in these systems as in all wireless communications is channel fading. In these pervasive wireless systems, however, the individual nodes may be equipped with only a single antenna due to cost and size constraints. One powerful strategy to combat channel fading in the above systems is to apply space-time block coding (STBC) in a distributed fashion: creating and harnessing space diversity by enabling a cluster of wireless nodes to relay signals for each other and effectively create a distributed (or virtual) antenna array - with each relay node serving as one antenna element in the STBC array. A major challenge to distributed STBC is that the system is fundamentally asynchronous: signals from the relay nodes tend to arrive at the destination node at different times. Most existing works so far have focused on recerver based schemes. To tackle the above challenge more effectively, this proposal will employ a more fundamental and flexible approach: developing coding and modulation structures which are inherently delay-tolerant (coherent or non-coherent). In this way we move at least part of the problem from the receiver to the transmitter. Considering the fact that most wireless nodes are powered by batteries, equally important is to ensure low complexity both at the relays and at the receiver. The results of this project will enable the so far largely theoretical benefits of cooperative diversity to be realised in practical wireless networks.

未来的无线系统预计将涉及大量的小型、低成本的通信节点，这些节点将广泛分布在城市的基础设施中，以提供真正普遍和无缝的通信以及诸如传感器网络之类的其他服务。也许在这些系统中最基本的挑战，在所有的无线通信是信道衰落。然而，在这些普适无线系统中，由于成本和尺寸的限制，各个节点可能仅配备有单个天线。在上述系统中对抗信道衰落的一个强大策略是以分布式方式应用空时块编码（STBC）：通过使无线节点的集群能够为彼此中继信号来创建和利用空间分集，并且有效地创建分布式（或虚拟）天线阵列，其中每个中继节点用作STBC阵列中的一个天线元件。分布式空时分组码面临的一个主要挑战是系统从根本上是异步的：来自中继节点的信号往往在不同的时间到达目的节点。大多数现有的作品，到目前为止，集中在recerver为基础的计划。为了更有效地应对上述挑战，该提案将采用更基本和灵活的方法：开发固有延迟容忍（相干或非相干）的编码和调制结构。这样，我们至少将问题的一部分从接收器转移到了发送器。考虑到大多数无线节点由电池供电的事实，同样重要的是确保中继器和接收器的低复杂性。这个项目的结果将使迄今为止，主要是理论上的合作分集的好处，实现在实际的无线网络。

项目成果

Low-complexity iterative interference cancellation multiuser detection for overloaded MIMO OFDM IDMA system

过载 MIMO OFDM IDMA 系统的低复杂度迭代干扰消除多用户检测

• 发表时间: 2013
• 期刊: WSA 2013 - 17th International ITG Workshop on Smart Antennas
• 作者: Chen M.

Design of Delay-Tolerant Linear Dispersion Codes

耐时延线性色散码的设计

• DOI: 10.1109/tcomm.2012.070912.110362
• 发表时间: 2012
• 期刊: IEEE Transactions on Communications
• 影响因子: 8.3
• 作者: Wang W

Low-complexity iteration-based interference cancellation in asynchronous physical-layer network coding

• DOI: 10.1049/iet-com.2014.0571
• 发表时间: 2015-03
• 期刊: IET Commun.
• 作者: Yixin Li;F. Zheng

Inter-symbol-interference cancelation in time-domain physical-layer network coding with fractional delay

• DOI: 10.1109/pimrc.2014.7136166
• 发表时间: 2014-09
• 期刊: 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)
• 作者: Yixin Li;F. Zheng;Yanxiang Jiang

Limited Feedback Power Control for Physical Layer Network Coding via Power Ratio Quantization

通过功率比量化进行物理层网络编码的有限反馈功率控制

• DOI: 10.1109/vtcfall.2013.6692268
• 发表时间: 2013
• 作者: Li Y