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
Performance Analysis of Beamforming Techniques in MU-MIMO Systems with Residual RF Impairments
Date
2015-05-19
Author
Tamer, Ufuk
SUNU, CANSU
AKTAŞ, EMRE
Yılmaz, Ali Özgür
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
200
views
0
downloads
Cite This
Multiple-input multiple-output wireless communication systems substantially suffer from RF Impairments in the course of the physical implementation of transceivers. In this paper, we study the performance of beamforming techniques in MU-MIMO (Multi-User MIMO) system with one transmitter and two receivers. We showed that the interference cancellation beamforming is suitable in the proposed scenario. In addition, we study the performance of MU-MIMO system with the suitable beamforming technique by taking RF impairments into account.
Subject Keywords
Beamforming
,
Multiple Input Multiple Output (MIMO) Model
,
Residual RF Impairments
,
Error Vector Magnitude (EVM)
URI
https://hdl.handle.net/11511/55715
Conference Name
23nd Signal Processing and Communications Applications Conference (SIU)
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Linearization of RF power amplifiers with memoryless baseband predistortion method
Kolcuoğlu, Turusan; Demir, Şimşek; Department of Electrical and Electronics Engineering (2011)
In modern wireless communication systems, advanced modulation techniques are used to support more users by handling high data rates and to increase the utilization efficiency of the limited RF spectrum. These techniques are sensitive to the nonlinear distortions due to their high peak to average power ratios. Main source of nonlinear distortion in transmitter topologies are power amplifiers that determine the overall efficiency and linearity of the transmitter. To increase linearity without sacrificing effi...
MIMO Communication Systems Using Hierarchical Modulation
Ugur, Yigit; Yılmaz, Ali Özgür (2014-04-25)
This paper considers multiple-input multiple-output (MIMO) communication systems using hierarchical modulation. The disadvantage of the maximum-likelihood (ML) receiver is that the computational complexity increases exponentially with the number of transmit antennas and the number of bits per modulation symbol. Using MIMO communication system with 16-ary hierarchical quadrature amplitude modulation (16-HQAM), we propose a receiver structure which can be an alternative to maximum-likelihood (ML) receiver. 16...
Joint Mitigation of IQ Imbalance and Power Amplifier Impairments by Real Valued Time Delay Neural Networks
Yeşil, Soner; Gürtunca, Burak; Yılmaz, Ali Özgür (2019-08-22)
This paper represents a neural network based joint mitigation of the IQ imbalance and power amplifier nonlinearities that cause degradation in the transmit signal quality of the wireless communication systems. A Real Valued Time Delay Neural Network architecture for this purpose has been verified on a hardware including cascaded NXP-MD8IC925 and NXPBLF8G10LS power amplifier components performing a total of 46dB gain. The test setup has been controlled over MATLAB in order to have a closed loop adaptive digi...
Evaluation of priority dependent and time scheduled MAC layer protocols for ad-hoc networks
Erdeğer, İsmail; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2015)
Ad-hoc networks have very unique features, such as dynamic topologies, relatively limited bandwidth and wireless signal propagation schemes, which present various challenges for wireless communication. In this thesis, control mechanisms for channel access scheduling and topology in ad-hoc networks are evaluated, which utilize the information from two-hop neighborhood to cope with the communication difficulties in ad-hoc networks. Channel assignment is one of the most important topics for ad-hoc networks. Ch...
Implementation of stanag 428 hf modem software on tms320c54x digital signal processor
Örümlü, Erhan; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2004)
In this research, STANAG 4285 HF modem software is implemented on TMS320C54x fixed point digital signal processor. The software is optimized in order to meet real-time operation requirements. A fractionally spaced least mean square (LMS) decision feedback equalizer (DFE) is employed for the receiver. In order to improve the convergence of the LMS algorithm a multipass technique is utilized. Based on Watterson̕s model, an HF channel simulator is employed for evaluating the performance of the modem. The simul...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
U. Tamer, C. SUNU, E. AKTAŞ, and A. Ö. Yılmaz, “Performance Analysis of Beamforming Techniques in MU-MIMO Systems with Residual RF Impairments,” presented at the 23nd Signal Processing and Communications Applications Conference (SIU), Inonu Univ, Malatya, TURKEY, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55715.