Results 51 to 60 of about 7,625,232 (365)
IEEE Transactions on Mobile Computing, 2020 Cognitive radio-enabled vehicular nodes as unlicensed users can competitively and opportunistically access the radio spectrum provided by a licensed provider and simultaneously use a dedicated channel for vehicular communications.
Daxin Tian +5 more
semanticscholar +1 more source
Sensors, 2019 The spectrum handoff is highly critical as well as challenging in a cognitive radio ad hoc network (CRAHN) due to lack of coordination among secondary users (SUs), which leads to collisions among the SUs and consequently affects the performance of the ...
Atif Shakeel +5 more
doaj +1 more source
Research on Burst Services Access Mechanism for Multi-Node Cooperation [PDF]
Hangkong bingqi, 2021 To solve the problem of large delay and small capacity of tactical cooperative network data link, in order to meet the requirements of low delay and large capacity in tactical network, a threshold adaptive access mechanism based on multi-channel ...
Ding Feng, Chen Xiaofei, Ma Shiyin
doaj +1 more source
Applied Sciences, 2021 In this paper, we investigate users’ performance under the hybrid spectrum access model in the massive cognitive radio network (CRN), where multiple primary users (PUs) and secondary users (SUs) transmit on the same channel simultaneously.
Samuel D. Okegbile, Bodhaswar T. Maharaj
doaj +1 more source
Revisiting LTE LAA: Channel Access, QoS, and Coexistence with WiFi [PDF]
IEEE Communications Magazine, 2019 Network operators are looking toward LTE License Assisted Access (LAA) as a means of extending capacity by offloading traffic to unlicensed bands. However, operation in these bands requires abiding by certain coexistence rules in terms of channel access.
J. Wszolek +3 more
semanticscholar +1 more source
A simple Encoding Scheme to Achieve the Capacity of Half-Duplex Relay Channel
Advances in Electrical and Electronic Engineering, 2022 In this paper, the Half-Duplex Relay Channel (HDRC) is thoroughly investigated. Even though this channel model is widely studied, the capacity is not yet fully understood and particularly has not been tightly expressed.
Zouhair Al-qudah, Khalid Ahmad Darabkh
doaj +1 more source
Source-Channel Coding Theorems for the Multiple-Access Relay Channel
, 2013 We study reliable transmission of arbitrarily correlated sources over multiple-access relay channels (MARCs) and multiple-access broadcast relay channels (MABRCs). In MARCs only the destination is interested in reconstructing the sources, while in MABRCs
Dabora, Ron +2 more
core +1 more source
Multi-channel Hybrid Access Femtocells: A Stochastic Geometric Analysis [PDF]
, 2013 For two-tier networks consisting of macrocells and femtocells, the channel access mechanism can be configured to be open access, closed access, or hybrid access.
Senior Member, Wenyi Zhang, Yi Zhong
core +1 more source
The Strongly Asynchronous Massive Access Channel
, 2018 This paper considers a Strongly Asynchronous and Slotted Massive Access Channel (SAS-MAC) where $K_n:=e^{n\nu}$ different users transmit a randomly selected message among $M_n:=e^{nR}$ ones within a strong asynchronous window of length $A_n:=e^{n\alpha}$
Devroye, Natasha +2 more
core +2 more sources
A Robust Channel Access Using Cooperative Reinforcement Learning for Congested Vehicular Networks
IEEE Access, 2020 Vehicular Ad-hoc Network (VANET) is an emerging technique dedicated to wireless vehicular communication to improve transportation safety by exchanging driving information between vehicles.
Chungjae Choe +5 more
semanticscholar +1 more source