Nakagami-m信道上URLLC网络的最小能量和错误率:一个有限块长度的分析

Xi Zhang, Qixuan Zhu, H. Poor
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引用次数: 1

摘要

第五代(5G)无线网络旨在提供广泛的时间敏感型多媒体业务和应用,以满足用户对延迟受限服务质量(QoS)的严格要求。5G多媒体无线网络的重要要求之一是高效支持超可靠低延迟通信(URLLC)。有限块长度编码(FBC)是支持URLLC业务的一种很有前途的候选技术,在URLLC业务中,移动用户传输短数据包以达到多媒体业务传输延迟的上限。本文对有限块长度下Nakagamim衰落信道下URLLC的包块错误率进行了建模和分析。然后,在分组错误率约束下,导出了在Nakagami-m衰落信道中数据传输的每比特最小能量。为了导出每比特最小能量的封闭表达式,我们得到了每比特最小能量的可达性界和逆界,并证明了这两个界是相等的。最后,我们通过数值分析评估了我们在有限块长度范围内推导出的每比特最小能量,并将其与瑞利衰落信道和宽带近似下的最小能量进行了比较,验证了我们推导出的分析结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Minimum-Energy and Error-Rate for URLLC Networks over Nakagami-m Channels: A Finite-Blocklength Analysis
The fifth generation (5G) wireless networks aim at providing a wide range of time-sensitive multimedia services and applications to satisfy users’ stringent requirements on delay-bounded quality of service (QoS). One of the important requirements for 5G multimedia wireless networks is to efficiently support the ultra-reliable and low- latency communications (URLLC). Finite blocklength coding (FBC) is a promising candidate technique to support URLLC services, where mobile users transmit short packets to upper-bound the transmission delay of multimedia traffic. In this paper, we model and analyze the packet-block error rate for URLLC under the Nakagamim fading channel in the finite blocklength regime. Then, we derive the minimum energy per bit for data transmissions in the Nakagami-m fading channel under the constraint of block error rate. To derive closed-form expressions for the minimum energy per bit, we obtain achievability and converse bounds on the minimum energy per bit, and show that these two bounds are equal to each other. Finally, we evaluate our derived minimum energy per bit in the finite blocklength regime through numerical analyses, and compare it with those under the Rayleigh fading channel and the wideband approximation, validating our derived analytical results.
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