Results 61 to 70 of about 2,065,034 (119)

A General Rate Duality of the MIMO Multiple Access Channel and the MIMO Broadcast Channel

open access: yes, 2008
We present a general rate duality between the multiple access channel (MAC) and the broadcast channel (BC) which is applicable to systems with and without nonlinear interference cancellation.
Hunger, Raphael, Joham, Michael
core   +1 more source

Channel access mechanism based on equally allocation of protocol sequence for VANET

open access: yesTongxin xuebao, 2016
In order to improve the throughput performance in VANET, a channel access mechanism based on equally al-location (EA) of protocol sequence was proposed.
Zhe-xin XU   +3 more
doaj  

Speeding up Future Video Distribution via Channel-Aware Caching-Aided Coded Multicast

open access: yes, 2016
Future Internet usage will be dominated by the consumption of a rich variety of online multimedia services accessed from an exponentially growing number of multimedia capable mobile devices.
Cacciapuoti, Angela Sara   +4 more
core   +1 more source

Channel MAC Protocol for Opportunistic Communication in Ad Hoc Wireless Networks

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
Despite significant research effort, the performance of distributed medium access control methods has failed to meet theoretical expectations. This paper proposes a protocol named “Channel MAC” performing a fully distributed medium access ...
Sylvie Perreau   +2 more
doaj   +1 more source

Approach towards the achievable sum rates capacity of Gaussian MIMO broadcast channels

open access: yesTongxin xuebao, 2006
Since it is very difficult to compute the sum rates capacity of Gaussian MIMO broadcast channels directly by using dirty paper coding approach,an iterative water-filling algorithm is proposed to obtain the sum capacity bound for multi-access channel and ...
PAN Cheng-kang1   +3 more
doaj   +2 more sources

Dynamic-Persistent CSMA: A Reinforcement Learning Approach for Multi-User Channel Access

open access: yesIEEE Access
This paper addresses the challenge of multiple users concurrently sharing a single channel in a wireless network, a problem typically managed by Carrier Sense Multiple Access (CSMA) protocols.
Chanho Lee, Seungkeun Park, Taesu Cheong
doaj   +1 more source

Non‐orthogonal multiple access without channel state information for similar channel conditions

open access: yesElectronics Letters, 2019
A downlink non‐orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario.
Wenlong Xia   +3 more
doaj   +1 more source

Performance Enriching Channel Allocation Algorithm for Vehicle-to-Vehicle City, Highway and Rural Network

open access: yesSensors, 2019
Future safety applications require the timely delivery of messages between vehicles. The 802.11p has been standardized as the standard Medium Access Control (MAC) protocol for vehicular communication.
Mohammed Abdulhakim Al-Absi   +2 more
doaj   +1 more source

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