Spatial Modulation

空间调制

• 批准号: EP/G011788/1
• 负责人: Harald Haas
• 金额: $ 39.33万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG011788%2F1
• 关键词: Spatial; Modulation

It is accepted that multiple antenna techniques can significantly improve link spectral efficiency. However, most of the technologies using multiple antennas require complex algorithms in order to eliminate inter-channel interference (ICI) which stems from simultaneous transmissions in spatial multiplexing systems. This renders the practical implementation difficult, especially in mobile stations, as the necessary digital signal processing requires significant energy. However, due to the clear advantages of MIMO techniques it must be a clear research goal to develop new approaches to multiple antenna transmission in order to mitigate the practical limitations while retaining the key advantages. Here, we introduce such entirely new approach which avoids ICI completely while still allowing for the exploitation of spatial multiplexing gains. The basic principle is that, in analogy to digital modulation schemes such as QAM (quadrature amplitude modulation), the multiple antenna array at the transmitter is considered as a spatial constellation diagram . As in QAM where every constellation point corresponds to a certain information sequence (symbol), every antenna corresponds to a unique information sequence, and is activated if the incoming information sequence matches that sequence. As a consequence, the location of the antenna carries information. In other words, a single valued signal, for example, a pure sinusoidal frequency carrier signal transmitted from an antenna of an antenna array conveys actual information provided that the receiver can detect where the actual signal originated from (detection of the actual antenna that transmitted signal energy). The proposed novel fundamental principle of implicit information transmission has implications on several key research areas in wireless communications systems such as on digital modulation, signal processing at the transmitter and the receiver, link and system capacity evaluation and wireless systems operation. For example, the mere fact that the location of an antenna conveys information implicitly makes an investigation of channel capacity in such systems imperative. Moreover, it opens avenues for a new class of adaptive modulation algorithms which takes into account the spatial constellation diagram , effectively resulting in three-dimensional adaptive modulation algorithms (the complex signal plane as used in state-of-the-art digital modulation plus the spatial constellation domain). Furthermore, adjustments are required to conventional communication systems, such as the addition of a new logical block at the receiver - namely, the antenna detection. Algorithms for such antenna detection, given the various radio propagation environments, have to be developed. The novel concept also has implications on the operation of wireless systems. For instance, the concept of virtual antenna arrays is well described in the literature. Such virtual antenna array, for example, exists in ad hoc networks where every node is equipped with one antenna. Multiple nodes (a subset of such nodes) can be considered as a virtual antenna array. This concept can now be combined with the new principle of spatial modulation to mitigate the multihop burden in ad hoc networks. In this research the key observation/discovery that the physical location of a transmitting antenna array carries information, will be further explored. This includes studies on the physical layer (link level) as well as studies on system level (in particular ad hoc and cellular systems). Our IEEE Trans. On Vehic. Techno. paper entitled Spatial Modulation (to appear in the first half of 2008) showcases our initial work on the topic and its potential. This proposal is to take advantage of our leading position to further develop the theory, algorithms, systems concepts as well as robust and low complexity practical implementations.

人们普遍认为，多种天线技术可以显着提高链路频谱效率。然而，大多数使用多个天线的技术都需要复杂的算法，以消除由于空间复用系统中同时传输而产生的信道间干扰（ICI）。这使得实际实现变得困难，特别是在移动站中，因为必要的数字信号处理需要大量能量。然而，由于 MIMO 技术具有明显的优势，开发新的多天线传输方法必须成为一个明确的研究目标，以便在保留关键优势的同时减轻实际限制。在这里，我们引入了这种全新的方法，它完全避免了 ICI，同时仍然允许利用空间复用增益。其基本原理是，类似于QAM（正交幅度调制）等数字调制方案，发射机处的多天线阵列被视为空间星座图。与在 QAM 中一样，每个星座点对应于特定的信息序列（符号），每个天线对应于唯一的信息序列，并且如果传入的信息序列与该序列匹配，则每个天线都会被激活。因此，天线的位置携带信息。换句话说，单值信号，例如从天线阵列的天线发送的纯正弦频率载波信号，只要接收器能够检测到实际信号源自何处（检测发送信号的实际天线）即可传达实际信息。活力）。所提出的隐式信息传输的新颖基本原理对无线通信系统中的几个关键研究领域具有影响，例如数字调制、发射机和接收机的信号处理、链路和系统容量评估以及无线系统操作。例如，天线的位置隐含地传达信息这一事实使得对此类系统中的信道容量的研究势在必行。此外，它为新型自适应调制算法开辟了道路，该算法考虑了空间星座图，有效地产生了三维自适应调制算法（最先进的数字调制中使用的复杂信号平面加上空间星座域）。此外，还需要对传统通信系统进行调整，例如在接收器处添加新的逻辑块——即天线检测。考虑到各种无线电传播环境，必须开发用于此类天线检测的算法。这一新颖的概念也对无线系统的操作产生了影响。例如，文献中详细描述了虚拟天线阵列的概念。例如，这种虚拟天线阵列存在于自组织网络中，其中每个节点都配备一根天线。多个节点（此类节点的子集）可以被视为虚拟天线阵列。这个概念现在可以与空间调制的新原理相结合，以减轻自组织网络中的多跳负担。在本研究中，将进一步探讨发射天线阵列的物理位置携带信息的关键观察/发现。这包括物理层（链路层）的研究以及系统层（特别是自组网和蜂窝系统）的研究。我们的 IEEE Trans。在车辆上。技术。题为“空间调制”的论文（将于 2008 年上半年发表）展示了我们在该主题上的初步工作及其潜力。该提案旨在利用我们的领先地位进一步发展理论、算法、系统概念以及鲁棒且低复杂度的实际实现。

项目成果

A General Framework for Performance Analysis of Space Shift Keying (SSK) Modulation for MISO Correlated Nakagami-m Fading Channels

MISO 相关 Nakagami-m 衰落信道的空移键控 (SSK) 调制性能分析通用框架

• DOI: 10.1109/tcomm.2010.09.090565
• 发表时间: 2010-09-01
• 期刊: IEEE Transactions on Communications
• 影响因子: 8.3
• 作者: M. Renzo;H. Haas
• 通讯作者: H. Haas

Bit Error Probability of SM-MIMO Over Generalized Fading Channels

• DOI: 10.1109/tvt.2012.2186158
• 发表时间: 2012-01-31
• 期刊: IEEE Transactions on Vehicular Technology
• 影响因子: 6.8
• 作者: M. Renzo;H. Haas
• 通讯作者: H. Haas

On the Performance of SSK Modulation over Multiple-Access Rayleigh Fading Channels

多址瑞利衰落信道上SSK调制的性能研究

• DOI: http://dx.10.1109/glocom.2010.5684333
• 发表时间: 2010
• 作者: Di Renzo M

On the Performance of Space Shift Keying (SSK) Modulation with Imperfect Channel Knowledge

不完全信道知识下的空移键控（SSK）调制性能研究

• DOI: http://dx.10.48550/arxiv.1107.4922
• 发表时间: 2011
• 作者: Di Renzo M

Space Shift Keying (SSK-) MIMO with Practical Channel Estimates

具有实际信道估计的空间移位键控 (SSK-) MIMO

• DOI: http://dx.10.1109/tcomm.2012.021712.100778
• 发表时间: 2012
• 期刊: IEEE Transactions on Communications
• 影响因子: 8.3
• 作者: Di Renzo M