Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
OPTIMUM DESIGN OF DISCRETE TRANSMIT PHASE ONLY BEAMFORMER
Date
2013-09-13
Author
Demir, Özlem Tuğfe
Tuncer, Temel Engin
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
170
views
0
downloads
Cite This
Transmit beamformer design usually results suboptimum bearnformers in multicast scenario. In this paper, discrete phase only beamformer design is considered. The design problem is cast in such a form that the solution is always feasible and optimum beamformer can be found using the branch and cut algorithm. Beamformer phase terms and their interrelations are expressed with a set of cosine vectors which lead to linear set of constraint equations that can be solved with mixed integer linear prograrmning. It is shown that the proposed approach is very effective and the number of quantization bits can be increased to obtain results close to optimum continuous phase beamformers.
Subject Keywords
Transmit beam former
,
Phase only beamformer
,
Mixed integer linear programming
,
Branch and cut
URI
https://hdl.handle.net/11511/52985
Conference Name
21st European Signal Processing Conference (EUSIPCO)
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Optimum Discrete Max-Min Style Broadcast Beamforming Design
Demir, Özlem Tuğfe; Tuncer, Temel Engin (2014-04-25)
In this paper, max-mm style transmit beamformer design for single group multicast (broadcast) scenario is considered. The phase and amplitude values of beamformer vector coefficients are selected from finite discrete sets. With the help of integer variables, original optimization problem is converted to a linear form appropriate for mixed integer linear programming. The solution is always feasible as long as the total power is above a certain value. Branch and cut strategy guarantees the optimum solution. P...
Optimum discrete transmit beamformer design
DEMİR, ÖZLEM TUĞFE; Tuncer, Temel Engin (2015-01-01)
In this paper, transmit beamformer design problem is considered for single group multicast case. This problem is treated in discrete phase and amplitude and converted to a linear form. The solution of this linear optimization problem is always feasible as long as the total transmit power is above a certain value. The proposed method is guaranteed to find the optimum solution. This new approach is used to design discrete phase-only (DPOB) and discrete phase-amplitude beamformers (DPAB). It is shown that the ...
Optimum discrete phase-only multicast beamforming with joint antenna and user selection in cognitive radio networks
DEMİR, ÖZLEM TUĞFE; Tuncer, Temel Engin (2015-11-01)
Spectrum underlay technique for secondary multicast network is an effective approach in cognitive radio. In such communication schemes, quality of service constraints are satisfied for the secondary users while interference to the primary users is kept under a threshold. Previous literature consists of suboptimum methods for the solution of the individual problems such as antenna and user selection. In this paper, the joint antenna and user selection problem is considered and solved in an optimum manner. Co...
Optimization techniques for nonconvex problems and optimum discrete transmit beamformer design /
Demir, Özlem Tuğfe; Tuncer, Temel Engin; Department of Electrical and Electronics Engineering (2014)
In this thesis, transmit beamformer design is investigated for single group multicast scenario. The problem is considered for both discrete and continuous case. The discrete problem is converted to a linear form in which there are both discrete and continuous variables. The resulting mixed integer linear programming problem is optimally solved with much lower computational complexity than brute force search. For practical reasons, robust version of the problem is also elaborated and solved with mixed intege...
Cooperative Network Coded ARQ Strategy for Broadcast Networks
Tutgun, Rasit; AKTAŞ, EMRE (2015-06-12)
A novel cooperative automatic repeat request (ARQ) method with network coding is proposed for broadcast networks where single source node broadcasts multiple packets to multiple destinations. Upon a failed transmission, multiple relays cooperate with the source node at the retransmission phase, where network coding is used to combine multiple lost packets. A random access mechanism is employed where retransmission is done according to back-off counters. The proposed method employs the back-off mechanism to ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Ö. T. Demir and T. E. Tuncer, “OPTIMUM DESIGN OF DISCRETE TRANSMIT PHASE ONLY BEAMFORMER,” presented at the 21st European Signal Processing Conference (EUSIPCO), Marrakesh, MOROCCO, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52985.