Cooperative Orthogonal MIMO-Relaying for UWB Ad-Hoc Networks
Cooperative Orthogonal MIMO-Relaying for UWB Ad-Hoc Networks
复制标题
UWB Ad-Hoc 网络的协作正交 MIMO 中继
DOI：
10.1109/glocom.2007.981
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
K. Leung
中科院分区：
文献类型：
--
作者：
Shouhong Zhu;K. Leung
本文提出并研究了一种可用于超宽带自组织网络中数据转发的协作多输入多输出(MIMO)中继策略。我们研究了两个相关问题：推导了在放大转发数据转发策略下利用所有信道信息的协作正交MIMO中继的公式，并给出了不同的数据转发场景实现正交MIMO中继或通过自身分量抑制实现的条件。此外，我们还提出了三种计算继电器放大参数的方法。仿真研究表明，对于给定的数据转发场景，如果中继数满足最小请求数，三种方法都可以实现正交MIMO中继或通过抑制自身分量来实现。在请求的中继数最少的情况下，所有三种方法都表现出相同的分集顺序(一种)，并且具有信道匹配权重的看似最好的方法比另外两种方法，即具有信道相位匹配权重的方法和具有全等权重的方法更差。
This conference paper proposes and investigates the cooperative orthogonal multiple input multiple output (MIMO) relaying strategies that can be adopted to forward data within UWB ad-hoc networks. We study two related issues: We derive the formula for the cooperative orthogonal MIMO-relaying with all channels' information under the amplify-and-forward data relaying policy, and present the conditions for different data forwarding scenarios to realize orthogonal MIMO-relaying or that via own component suppression. Further, we propose three approaches to calculate the amplifying parameters at relays. Simulation studies show that for given data forwarding scenario if the relay number satisfies the least requested number, all three approaches can realize orthogonal MIMO-relaying or that via own component suppression. With the least requested number of relays, all three approaches exhibit the same diversity order (one), and that the seemingly best approach with channel-matched weights is worse than the other two approaches, i.e. the one with channel phase-matched weights and the one with all-equal weights.