Delay performance of MISO wireless communications
Delay performance of MISO wireless communications
复制标题
MISO无线通信的延迟性能
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Kountouris
中科院分区：
文献类型：
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作者：
Jesús Arnau;M. Kountouris
超可靠低延迟通信（URLLC）由于关键任务应用和以设备为中心的通信的出现，目前受到了极大关注。URLLC将需要从以吞吐量为导向的系统设计向保证可靠的端到端延迟的整体设计进行根本性的范式转变。深入理解无线网络的延迟性能对于高效的URLLC系统至关重要。在本文中，我们研究了在统计延迟约束下多输入单输出（MISO）系统的网络层性能。我们通过其梅林变换的闭式表达式对面向MISO分集的服务过程进行了统计表征，并利用随机网络演算工具推导了概率延迟界限。特别是，我们分析了具有完美和不完美信道知识的发射波束成形，并将其与正交空时码和天线选择进行了比较。还研究了发射功率和天线数量对延迟分布的影响。我们的结果为能够保证严格的URLLC延迟要求的通信系统设计提供了有用的指导方针。
Ultra reliable, low latency communications (URLLC) are currently attracting significant attention due to the emergence of mission-critical applications and device-centric communication. URLLC will entail a fundamental paradigm shift from throughput-oriented system design towards holistic designs for guaranteed and reliable end-to-end latency. A deep understanding of the delay performance of wireless networks is essential for efficient URLLC systems. In this paper, we investigate the network layer performance of multiple-input, single-output (MISO) systems under statistical delay constraints. We provide a statistical characterization of MISO diversity-oriented service process through closed-form expressions of its Mellin transform and derive probabilistic delay bounds using tools from stochastic network calculus. In particular, we analyze transmit beamforming with perfect and imperfect channel knowledge and compare it with orthogonal space-time codes and antenna selection. The effect of transmit power and number of antennas on the delay distribution is also investigated. Our results provide useful guidelines for the design of communication systems that can guarantee the stringent URLLC latency requirements.
影响因子：
35.6
作者：
Fidler, Markus;Rizk, Amr
通讯作者：
Rizk, Amr