Filters








12 Hits in 4.5 sec

Multi-Group Multicast Beamforming by Superiorized Projections onto Convex Sets

Jochen Fink, Renato Cavalcante, Slawomir Stanczak
2021 IEEE Transactions on Signal Processing  
Index Terms-Multicast beamforming, nonconvex optimization, semidefinite relaxation, projections onto convex sets, superiorization.  ...  We formulate a convex relaxation of the problem as a semidefinite program in a real Hilbert space, which allows us to approximate a point in the feasible set by iteratively applying a bounded perturbation  ...  We show that this operator is bounded perturbation resilient, which allows us to add small perturbations in each iteration with the intent to reduce the objective value and the distance to the nonconvex  ... 
doi:10.1109/tsp.2021.3117513 fatcat:ejkxvb3drng6bpnczrlu5zanry

Deep Unfolded Multicast Beamforming [article]

Satoshi Takabe, Tadashi Wadayama
2020 arXiv   pre-print
Multicast beamforming is a promising technique for multicast communication.  ...  Providing an efficient and powerful beamforming design algorithm is a crucial issue because multicast beamforming problems such as a max-min-fair problem are NP-hard in general.  ...  In [20] , it is shown that POCS is bounded perturbation resilient, i.e, POCS-BP always converges to a solution of the convex feasibility problem.  ... 
arXiv:2004.09345v1 fatcat:zcrka6vzh5awlmai2bx3s463qy

Randomized Algorithms for Optimal Solutions of Double-Sided QCQP With Applications in Signal Processing

Yongwei Huang, Daniel P. Palomar
2014 IEEE Transactions on Signal Processing  
Index Terms-Robust receive beamforming, optimal radar waveform, multicast downlink beamforming, homogeneous quadratically constrained quadratic program (QCQP), semidefinite programming (SDP) relaxation  ...  QCQP problems are hard to solve, in general, and they are typically approached by solving a semidefinite programming (SDP) relaxation followed by a postprocessing procedure.  ...  Also, the parameters and are and , respectively, and the positive parameters and control the perturbation bound.  ... 
doi:10.1109/tsp.2013.2297683 fatcat:4o4hj6iiwjggbkwfge3blzymqa

A Distributed Algorithm for Robust Transmission in Multicell Networks with Probabilistic Constraints

Xinruo Zhang, Mohammad Reza Nakhai
2016 2016 IEEE Global Communications Conference (GLOBECOM)  
The intractable problem is first converted to a semidefinite programming form with linear matrix inequality constraints via Schur complement, S-procedure and semidefinite relaxation technique, and then  ...  This paper studies a robust beamforming optimization problem of minimizing total transmit power in a distributed manner in the presence of imperfect channel state information (CSI) in multicell interference  ...  Finally, combining (18), (19) with (22) and relaxing the set of nonconvex rank-one constraints via standard semidefinite relaxation (SDR) approach, the problem in (13) can be reformulated as SDP form  ... 
doi:10.1109/glocom.2016.7841493 dblp:conf/globecom/ZhangN16 fatcat:tjaopolmwvcqjmpvzd3zasuj54

2021 Index IEEE Transactions on Signal Processing Vol. 69

2021 IEEE Transactions on Signal Processing  
The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination.  ...  The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author's name, the publication abbreviation, month, and year, and inclusive pages.  ...  ., +, TSP 2021 5345-5358 Bias Reduced Semidefinite Relaxation Method for 3-D Rigid Body Local-ization Using AOA.  ... 
doi:10.1109/tsp.2022.3162899 fatcat:kcubj566gzb4zkj7xb5r5we3ri

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
The homogeneous QCQP formulation, though non-convex, is amenable to semidefinite programming (SDP) relaxation methods.  ...  TA6b-2 10:40 AM Robust Adaptive Beamforming via Estimating Steering Vector Based on Semidefinite Relaxation Arash Khabbazibasmenj, Sergiy Vorobyov, Aboulnasr Hassanien, University of Alberta A new robust  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq

Edge Artificial Intelligence for 6G: Vision, Enabling Technologies, and Applications [article]

Khaled B. Letaief, Yuanming Shi, Jianmin Lu, Jianhua Lu
2021 arXiv   pre-print
, and privacy leakage in both of the training and inference processes.  ...  Standardization, software and hardware platforms, and application scenarios are also discussed to facilitate the industrialization and commercialization of edge AI systems.  ...  Although the semidefinite relaxation approach [264] is able to convexify the general quadratic programs by matrix lifting and dropping the resulting rank constraints, it fails to return high quality  ... 
arXiv:2111.12444v1 fatcat:crrbtfylvjeihogumggdnxcbpq

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Amitav Mukherjee, S. Ali A. Fakoorian, Jing Huang, A. Lee Swindlehurst
2014 IEEE Communications Surveys and Tutorials  
Secret-key generation and establishment protocols based on physical layer mechanisms are subsequently covered.  ...  The survey begins with an overview of the foundations dating back to the pioneering work of Shannon and Wyner on information-theoretic security.  ...  Messages sent to this entity are generated using the public key and then perturbed by a random vector of Hamming weight t.  ... 
doi:10.1109/surv.2014.012314.00178 fatcat:cmqxgwotmvbmldwqdvjkzsweam

Adaptive limited feedback for MISO wiretap channels with cooperative jamming

Minyan Pei, Dongtang Ma, Jibo Wei
2013 2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC)  
Secret-key generation and establishment protocols based on physical layer mechanisms are subsequently covered.  ...  The survey begins with an overview of the foundations dating back to the pioneering work of Shannon and Wyner on information-theoretic security.  ...  Messages sent to this entity are generated using the public key and then perturbed by a random vector of Hamming weight t.  ... 
doi:10.1109/spawc.2013.6612057 dblp:conf/spawc/PeiMW13 fatcat:gjn4o2l4qjae5ipsr6zfjo35yu

2021 Index IEEE Transactions on Vehicular Technology Vol. 70

2021 IEEE Transactions on Vehicular Technology  
The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination.  ...  The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author's name, the publication abbreviation, month, and year, and inclusive pages.  ...  Wang, A., +, TVT Jan. 2021 900-913 Novel Relax-and-Retract Algorithm for Intelligent Reflecting Surface Design.  ... 
doi:10.1109/tvt.2022.3151213 fatcat:vzuzqu54irebpibzp3ykgy5nca

Parallel and Distributed Successive Convex Approximation Methods for Big-Data Optimization [article]

Gesualdo Scutari, Ying Sun
2018 arXiv   pre-print
The design and the analysis of such complex, large-scale, systems pose several challenges and call for the development of new optimization models and algorithms.  ...  , step size schedules, and control of the computation/communication efficiency.  ...  ) the multicast beamforming problem.  ... 
arXiv:1805.06963v1 fatcat:fbjziifyezdixoudqgi2sbfpum

Deep Learning-Aided 6G Wireless Networks: A Comprehensive Survey of Revolutionary PHY Architectures [article]

Burak Ozpoyraz, A. Tugberk Dogukan, Yarkin Gevez, Ufuk Altun, Ertugrul Basar
2022
As we move forward to a thoroughly intelligent society with 6G wireless networks, new applications and use-cases have been emerging with stringent requirements for next-generation wireless communications  ...  Furthermore, this article provides programming examples for a number of DL techniques and the implementation of a DL-based MIMO by sharing user-friendly code snippets, which might be useful for interested  ...  The BER performance of the DetNet is compared to the stateof-the-art detectors, approximate message passing (AMP), and semidefinite relaxation (SDRX) under the assumption of perfect CSI at the receiver  ... 
doi:10.48550/arxiv.2201.03866 fatcat:ibvzihwplrdvjphfsve6iu7vea