Zobrazeno 1 - 10
of 289
pro vyhledávání: '"Risto Wichman"'
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 1415-1429 (2024)
The high level of autonomy and intelligence that is envisioned in sixth generation (6G) networks necessitates the development of learning-aided solutions, especially in cases in which conventional Channel State Information (CSI)-based network process
Externí odkaz:
https://doaj.org/article/ff21eaa5c85e44f5b9015c9af3db55f3
Autor:
Nikolaos Nomikos, Themistoklis Charalambous, Risto Wichman, Yvonne-Anne Pignolet, Nikolaos Pappas
Publikováno v:
Entropy, Vol 26, Iss 8, p 655 (2024)
In this paper, a network comprising wireless devices equipped with buffers transmitting deadline-constrained data packets over a slotted-ALOHA random-access channel is studied. Although communication protocols facilitating retransmissions increase re
Externí odkaz:
https://doaj.org/article/f93b1115900046fd9b14bce5df6960ee
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 3, Pp 366-378 (2022)
Full-duplex relaying is an enabling technique of sixth generation (6G) mobile networks, promising tremendous rate and spectral efficiency gains. In order to improve the performance of full-duplex communications, power control is a viable way of avoid
Externí odkaz:
https://doaj.org/article/9fdb9c2081df4a2ba9fe1c47b817d834
Autor:
Nikolaos Nomikos, Themistoklis Charalambous, Nikolaos Pappas, Demosthenes Vouyioukas, Risto Wichman
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 1041-1054 (2021)
Buffer-aided (BA) relaying improves the diversity of cooperative networks often at the cost of increasing end-to-end packet delays. This characteristic renders BA relaying unsuitable for delay-sensitive applications. However, the increased diversity
Externí odkaz:
https://doaj.org/article/fd2905aa5a254b46ab8f6aed267014a7
Publikováno v:
IEEE Access, Vol 7, Pp 116162-116171 (2019)
This work focuses on the interplay between rotation angle, transmit power, fading severity, and noise impairment severity in signal space diversity-based three time-slot decode-and-forward two-way relaying networks. Specifically, we develop a joint d
Externí odkaz:
https://doaj.org/article/9044049ea5be4ad0a6ce6e24d481d61e
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2017, Iss 1, Pp 1-12 (2017)
Abstract In-band full-duplex (FD) relays are useful for extending coverage areas and increasing overall throughput in wireless networks. The main technical difficulty hindering their implementation and use is their inherent self-interference (SI), ge
Externí odkaz:
https://doaj.org/article/3c9e0ac180b245ac8bf94dd22cd60c12
Publikováno v:
Journal of Electrical and Computer Engineering, Vol 2010 (2010)
This paper proposes a novel multiuser (MU) multiplexing scheme for temporally correlated multiple-input, multiple-output (MIMO) channels, suitable for systems employing low-rate feedback links. A decentralized solution is obtained by the mobile recei
Externí odkaz:
https://doaj.org/article/93e176ec3fea44478fb0517e00851419
Autor:
Mika Husso, Jyri Hämäläinen, Riku Jäntti, Juan Li, Edward Mutafungwa, Risto Wichman, Zhong Zheng, Alexander M. Wyglinski
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2010 (2010)
We present an analysis of a femtocellular communications network and the impact of cochannel interference on link performance. Furthermore, we propose a method whereby user terminals can maintain a controlonly connection to an adjacent femtocell for
Externí odkaz:
https://doaj.org/article/62a592e4f2e4435f9886f10d66e69bd8
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2009 (2009)
Relays are a cost-efficient way to extend or distribute high data rate coverage more evenly in next generation cellular networks. This paper introduces a radio resource management solution based on dynamic and flexible resource assignment and coopera
Externí odkaz:
https://doaj.org/article/ee4f4de1393142a886d937eed98de715
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2009 (2009)
We investigate the performance of channel-aware scheduling algorithms designed for the downlink of a wireless communication system. Our study focuses on a two-transmit antenna cellular system, where the base station can only rely on quantized version
Externí odkaz:
https://doaj.org/article/b5044a0a60544fdb8bc73f75617bf94a