R Venkatesha Prasad

Dr. R Venkatesha Prasad

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 January 2019 in Proceedings of the IEEE
Verified
Journal Article
Open access
OHOliver Holland
Oliver Holland
ESEckehard Steinbach
Eckehard Steinbach
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
QLQian Liu
Qian Liu
ZDZaher Dawy
Zaher Dawy
JAJose Araujo
Jose Araujo
The IEEE ``Tactile Internet'' (TI) Standards working group (WG), designated the numbering IEEE 1918.1, undertakes pioneering work on the development of standards for the TI. This paper describes the WG, its intentions, and its developing baseline standard and the associated reasoning behind that and touches on a further standard already initiated under its scope: IEEE 1918.1.1 on ``Haptic Codecs for the TI.'' IEEE 1918.1 and its baseline standard aim to set the framework and act as the foundations for the TI, thereby also serving as a basis for further standards developed on TI within the WG. This paper discusses the aspects of the framework such as its created TI architecture, including the elements, functions, interfaces, and other considerations therein, as well as the novel aspects and differentiating factors compared with, e.g., 5G Ultra-Reliable Low-Latency Communication, where it is noted that the TI will likely operate as an overlay on other networks or combinations of networks. Key foundations of the WG and its baseline standard are also highlighted, including the intended use cases and associated requirements that the standard must serve, and the TI's fundamental definition and assumptions as understood by the WG, among other aspects.

2 May 2023 in IEEE Transactions on Neural Networks and Learning Systems
Verified
Journal Article
Open access
AMAmjad Yousef Majid
Amjad Yousef Majid
SSSerge Saaybi
Serge Saaybi
VFVincent Francois-Lavet
Vincent Francois-Lavet
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
CVChris Verhoeven
Chris Verhoeven
Deep reinforcement learning (DRL) and evolution strategies (ESs) have surpassed human-level control in many sequential decision-making problems, yet many open challenges still exist. To get insights into the strengths and weaknesses of DRL versus ESs, an analysis of their respective capabilities and limitations is provided. After presenting their fundamental concepts and algorithms, a comparison is provided on key aspects, such as scalability, exploration, adaptation to dynamic environments, and multiagent learning. Current research challenges are also discussed, including sample efficiency, exploration versus exploitation, dealing with sparse rewards, and learning to plan. Then, the benefits of hybrid algorithms that combine DRL and ESs are highlighted.

10 December 2005
Verified
Conference Paper
Closed access
PPP. Pawelczak
P. Pawelczak
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
LXLiang Xia
Liang Xia
INI.G.M.M. Niemegeers
I.G.M.M. Niemegeers

1 September 2009
Verified
Conference Paper
Closed access
XAXueli An
Xueli An
CSChin-Sean Sum
Chin-Sean Sum
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
JWJunyi Wang
Junyi Wang
ZLZhou Lan
Zhou Lan
INIgnas Niemegeers
Ignas Niemegeers
In this paper, we propose a solution to resolve link blockage problem in 60 GHz WPANs. Line-of-Sight (LOS) link is easily blocked by a moving person, which is concerned as one of the severe problems in 60 GHz systems. Beamforming is a feasible technique to resolve link blockage by switching the beam path from LOS link to a Non-LOS (NLOS) link. We propose and evaluate two kinds of Beam Switching (BS) mechanisms: instant decision based BS and environment learning based BS. We examine these mechanisms in a typical indoor WPAN scenario. Extensive simulations have been carried out, and our results reveal that combining angle-of-arrival with the received signal to noise ratio could make better decision for beam switching. Our work provides valuable observations for beam switching during point-to-point communication using 60 GHz radio.

10 September 2007 in Computer Communications
Verified
Journal Article
Closed access
BDBao Linh Dang
Bao Linh Dang
MLM. Garcia Larrode
M. Garcia Larrode
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
INIgnas Niemegeers
Ignas Niemegeers
AKA.M.J. Koonen
A.M.J. Koonen

3 March 2017 in IEEE Communications Letters
Verified
Journal Article
Closed access
KCKishor Chandra
Kishor Chandra
R Venkatesha PrasadR Venkatesha Prasad
R Venkatesha Prasad
INIgnas Niemegeers
Ignas Niemegeers
IEEE 802.11ad specifies a hybrid medium access control (MAC) protocol consisting of contention as well as non-contention-based channel access mechanisms. It also employs directional antennas to compensate for the high free-space path loss observed in 60 GHz frequency band. Therefore, it significantly differs from other IEEE 802.11(b/g/n/ac) MAC protocols and thus requires new methods to analyze its performance. We propose a new analytical model for performance analysis of IEEE 802.11ad employing a 3-D Markov chain considering all the features of IEEE 802.11ad medium access mechanisms including the presence of non-contention access and the different number of sectors due to the use of directional antennas. We show that the number of sectors has a high impact on the network throughput. We show that the MAC packet delay is significantly affected by the duration of the contention period. Our results indicate that a suitable choice of the number of sectors and contention period can improve the channel utilization and MAC delay performance.