Zobrazeno 1 - 10
of 300
pro vyhledávání: '"Wichman Risto"'
Autor:
Tanash, Islam M., Wichman, Risto
This paper proposes a three-dimensional (3D) satellite-terrestrial communication network assisted with reconfigurable intelligent surfaces (RISs). Using stochastic geometry models, we present an original framework to derive tractable yet accurate clo
Externí odkaz:
http://arxiv.org/abs/2405.11909
Autor:
Rajamäki, Robin, Wichman, Risto
This paper studies the role of the joint transmit-receive antenna array geometry in shaping the self-interference (SI) channel in full-duplex communications. We consider a simple spherical wave SI model and two prototypical linear array geometries wi
Externí odkaz:
http://arxiv.org/abs/2401.06520
Optical wireless technology has the potential to complement the wireless access services provided so far over RF. Apart from the abundant unlicensed bandwidth available for ultra-dense deployments over optical wireless bands, optical wireless also ha
Externí odkaz:
http://arxiv.org/abs/2312.12328
Accurate and precise positioning is required to guarantee the massive adoption of a wide range of 5G indoor applications, such as logistics and smart manufacturing. Native support for New Radio (NR) positioning services was included in 3GPP Rel-16, w
Externí odkaz:
http://arxiv.org/abs/2312.04368
While wireless information transmission (WIT) is evolving into its sixth generation (6G), maintaining terminal operations that rely on limited battery capacities has become one of the most paramount challenges for Internet-of-Things (IoT) platforms.
Externí odkaz:
http://arxiv.org/abs/2309.11929
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2004, Iss 2, Pp 297-308 (2004)
We study the uplink performance of MIMO systems in UTRA FDD using noise rise and system load as performance measures. Results show that the uplink coverage and capacity of the UTRA FDD mode are significantly improved by SIMO and MIMO techniques that
Externí odkaz:
https://doaj.org/article/d05d945ea0ec414da40430bdac708fbd
We studied power splitting-based simultaneous wireless information and power transfer (PS-SWIPT) in multiple access channels (MAC), considering the decoding cost and non-linear energy harvesting (EH) constraints at the receiving nodes to study practi
Externí odkaz:
http://arxiv.org/abs/2111.06444
Considering ubiquitous connectivity and advanced information processing capability, huge amount of low-power IoT devices are deployed nowadays and the maintenance of those devices which includes firmware/software updates and recharging the units has
Externí odkaz:
http://arxiv.org/abs/2105.12838
Visible Light Communication~(VLC) systems provide not only illumination and data communication, but also indoor monitoring services if the effect that different events create on the received optical signal is properly tracked. For this purpose, the C
Externí odkaz:
http://arxiv.org/abs/2101.10838
As low Earth orbit (LEO) satellite communication systems are gaining increasing popularity, new theoretical methodologies are required to investigate such networks' performance at large. This is because deterministic and location-based models that ha
Externí odkaz:
http://arxiv.org/abs/2004.13378