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Exploiting capture and interference cancellation for uplink random multiple access in 5G millimeter-wave networks
Annals of Telecommunications ( IF 1.9 ) Pub Date : 2019-05-03 , DOI: 10.1007/s12243-019-00714-w
Fulvio Babich , Massimiliano Comisso , Alessandro Cuttin , Fabio Ricciato

The forthcoming 5G technology aims to provide massive device connectivity and ultra-high capacity with reduced latency and costs. These features will be enabled by increasing the density of the base stations, using millimeter-wave (mmWave) bands, massive multiple-input multiple-output systems, and non-orthogonal multiple access techniques. The ability to support a large number of terminals in a small area is in fact a great challenge to guarantee massive access. In this context, this paper proposes a new receiver model for the uplink of 5G mmWave cellular networks. The receiver, called Iterative Decoding and Interference Cancellation (IDIC), is based on the Slotted Aloha (SA) protocol and exploits the capture effect alongside the successive IC process to resolve packet collisions. A 5G propagation scenario, modeled according to recent mmWave channel measurements, is used to compare IDIC with the widely adopted Contention Resolution Diversity SA (CRDSA) scheme to show the performance gain of IDIC, when elements of practical relevance, like imperfect cancellation and receive power diversity, are considered. The impact of packet and power diversity is also investigated to derive the preferable uplink random access strategy that maximizes the system throughput according to the offered channel load.

中文翻译:

利用捕获和干扰消除技术在5G毫米波网络中进行上行链路随机多址访问

即将到来的5G技术旨在提供大规模的设备连接性和超高容量,同时减少延迟和成本。这些功能将通过使用毫米波(mmWave)频段,大规模多输入多输出系统和非正交多址技术提高基站的密度来实现。在小范围内支持大量终端的能力实际上是确保大规模访问的巨大挑战。在这种情况下,本文为5G mmWave蜂窝网络的上行链路提出了一种新的接收机模型。该接收器称为迭代解码和干扰消除(IDIC),基于Slotted Aloha(SA)协议,并利用捕获效果以及后续的IC处理来解决数据包冲突。5G传播场景,根据最近的毫米波信道测量建模,在考虑到实际相关的元素(如不完全消除和接收功率分集)时,将IDIC与广泛采用的竞争分辨率分集SA(CRDSA)方案进行比较,以显示IDIC的性能增益。还研究了分组和功率分集的影响,以得出可取的上行链路随机接入策略,该策略根据提供的信道负载最大化系统吞吐量。
更新日期:2019-05-03
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