Zobrazeno 1 - 10
of 684
pro vyhledávání: '"Liang Liping"'
By enabling very high bandwidth for radio communications, the millimeter-wave (mmWave), which can easily be integrated with massive-multiple-input-multiple-output (massive-MIMO) due to small antenna size, has been attracting growing attention as a ca
Externí odkaz:
http://arxiv.org/abs/2408.07103
Conventional multiple-input multiple-out (MIMO) technologies have encountered bottlenecks of significantly increasing spectrum efficiencies of wireless communications due to the low degrees of freedom in practical line-of-sight scenarios and severe p
Externí odkaz:
http://arxiv.org/abs/2408.01256
Publikováno v:
IEEE WIRELESS COMMUNICATIONS LETTERS, VOL. 13, NO. 4, APRIL 2024
For users in hotspot region, orbital angular momentum (OAM) can realize multifold increase of spectrum efficiency (SE), and the flying base station (FBS) can rapidly support the real-time communication demand. However, the hollow divergence and align
Externí odkaz:
http://arxiv.org/abs/2407.21479
Publikováno v:
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 71, NO. 1, JANUARY 2022
In the disaster and remote regions, unmanned aerial vehicles (UAVs) can assist the data acquisition for Internet of Things (IoT). How to cover massive IoT devices (IDs), which require diverse quality-of-service (QoS), is a crucial challenge. For UAV-
Externí odkaz:
http://arxiv.org/abs/2407.21470
Publikováno v:
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 73, NO. 1, JANUARY 2024
Orbital angular momentum (OAM) mode multiplexing has the potential to achieve high spectrum-efficiency communications at the same time and frequency by using orthogonal mode resource. However, the vortex wave hollow divergence characteristic results
Externí odkaz:
http://arxiv.org/abs/2407.21444
Orbital angular momentum (OAM), providing the orthogonality among different OAM modes, has attracted much attention to significantly increase spectrum efficiencies (SEs) and enhance the anti-jamming results of wireless communications. However, the SE
Externí odkaz:
http://arxiv.org/abs/2407.20094
Frequency hopping (FH) has been widely used as a powerful technique for antijamming in wireless communications. However, as the wireless spectrum is becoming more and more crowded, it is very difficult to achieve efficient antijamming results with FH
Externí odkaz:
http://arxiv.org/abs/2407.13361
The emerging orbital angular momentum (OAM) based wireless communication is expected to be a high spectrum-efficiency communication paradigm to solve the growing transmission data rate and limited bandwidth problem. Academic researchers mainly concen
Externí odkaz:
http://arxiv.org/abs/2407.13332
Due to the crowded spectrum, frequency hopping (FH) techniques are now very difficult to achieve efficient antijamming and increase spectrum efficiency (SE) for wireless communications. The emerging orbital angular momentum (OAM), which is a property
Externí odkaz:
http://arxiv.org/abs/2407.12350
Orbital angular momentum (OAM) based mode hopping (MH) scheme is expected to be a potential anti-jamming technology in radio vortex wireless communications. However, it only uses one OAM-mode for hopping, thus resulting in low spectrum efficiency (SE
Externí odkaz:
http://arxiv.org/abs/2407.13140