Zobrazeno 1 - 10
of 1 000
pro vyhledávání: '"Larsson, Erik. G."'
We propose a novel generalized framework for grant-free random-access (GFRA) in cell-free massive multiple input multiple-output systems where multiple geographically separated access points (APs) or base stations (BSs) aim to detect sporadically act
Externí odkaz:
http://arxiv.org/abs/2411.09328
Considering the exponential growth of Internet-of-Things devices and the goals toward sustainable networks, the complexity should be focused on the infrastructure side. For a massive number of passive devices, backscatter communication (BC) is a prom
Externí odkaz:
http://arxiv.org/abs/2411.08401
Autor:
Wu, Yibo, Keskin, Musa Furkan, Gustavsson, Ulf, Seco-Granados, Gonzalo, Larsson, Erik G., Wymeersch, Henk
Distributed massive multiple-input multiple-output networks utilize a large number of distributed access points (APs) to serve multiple user equipments (UEs), offering significant potential for both communication and localization. However, these netw
Externí odkaz:
http://arxiv.org/abs/2410.23120
Autor:
Bai, Jianan, Larsson, Erik G.
The wireless channel changes continuously with time and frequency and the block-fading assumption, which is popular in many theoretical analyses, never holds true in practical scenarios. This discrepancy is critical for user activity detection in gra
Externí odkaz:
http://arxiv.org/abs/2410.17113
We study a delay-constrained grant-free random access system with a multi-antenna base station. The users randomly generate data packets with expiration deadlines, which are then transmitted from data queues on a first-in first-out basis. To deliver
Externí odkaz:
http://arxiv.org/abs/2410.17068
Recent developments in polymer microwave fiber (PMF) have opened great opportunities for robust, low-cost, and high-speed sub-terahertz (THz) communications. Noticing this great potential, this paper addresses the problem of estimation of the propaga
Externí odkaz:
http://arxiv.org/abs/2410.02514
We propose a novel method for user-to-user interference (UUI) mitigation in dynamic time-division duplex multiple-input multiple-output communication systems with multi-antenna users. Specifically, we consider the downlink data transmission in the pr
Externí odkaz:
http://arxiv.org/abs/2408.03740
Backscatter communication (BC) has emerged as a key technology to satisfy the increasing need for low-cost and green Internet-of-Things (IoT) connectivity, especially in large-scale deployments. Unlike the monostatic BC (MoBC), the bistatic BC (BiBC)
Externí odkaz:
http://arxiv.org/abs/2407.18048
Extremely large-scale antenna arrays (ELAA) play a critical role in enabling the functionalities of next generation wireless communication systems. However, as the number of antennas increases, ELAA systems face significant bottlenecks, such as exces
Externí odkaz:
http://arxiv.org/abs/2407.16121
We consider a cell-free massive multiple-input multiple-output (CFmMIMO) network operating in dynamic time division duplex (DTDD). The switching point between the uplink (UL) and downlink (DL) data transmission phases can be adapted dynamically to th
Externí odkaz:
http://arxiv.org/abs/2406.14126