Naval Postgraduate School
Dudley Knox Library
NPS Dudley Knox Library
View Item 
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  •   Calhoun Home
  • Theses and Dissertations
  • 1. Thesis and Dissertation Collection, all items
  • View Item
  • How to search in Calhoun
  • My Accounts
  • Ask a Librarian
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of CalhounCollectionsThis Collection

My Account

LoginRegister

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

Adaptive beamforming techniques for mitigating interference in wireless networks

Thumbnail
Download
Icon13Sep_Mylonas_Ioannis.pdf (3.665Mb)
Download Record
Download to EndNote/RefMan (RIS)
Download to BibTex
Author
Mylonas, Ioannis
Date
2013-09
Advisor
Romero, Ric Α.
Ha, Tri T.
Second Reader
Cristi, Roberto
Metadata
Show full item record
Abstract
In this thesis, a single-input-multiple-output (SIMO) wireless antenna network is investigated in terms of its performance. We analyze the system with regard to the number of receive-transmit antennas (Rx-Tx) and other network parameters such as noise, interferences, channel taps and gain factors. We derive the diversity signal-to-interference-and-noise ratio (SINR) expression initially for each individual Rx and then for the whole system. Afterwards, four distributive adaptive beamforming techniques are proposed and described in detail. Each one uses a different gain selection combining (SC) rule, and we propose one of them as the most efficient, a technique that provides a satisfactory combined SINR (SINRC) with the least number of channel taps used. Then we use detection fundamentals and probability theory to derive an expression for the average probability of signal detection (dP) for asingle Rx. Considering two of our parameters (the channel tap vector and the gain factor) as being random variables (RVs), we perform a double averaging procedure over the two RVs’ probability density functions to derive dPformulas. Two cases are studied followed by their respective dP plots and comparisons. Finally, two modulation techniques are employed, and following the same averaging procedure, we derive bit error ratio (BER) formulas and plot various BER curves. This analysis provides quantitative results with regard to BER improvement techniques.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Copyright is reserved by the copyright owner.
URI
http://hdl.handle.net/10945/48123
Collections
  • 1. Thesis and Dissertation Collection, all items

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    A game theoretical approach to the contact area helicopter ASW problem 

    Hall, Charles R., III (Monterey, California: U.S. Naval Postgraduate School, 1964);
    The helicopter contact area search problem is studied. The analysis used to derive current search plans is presented, and an error in this analysis is demonstrated. As a result of this examination a new model is constructed ...
  • Thumbnail

    Autonomous non-linear classification of LPI radar signal modulations 

    Gulum, Taylan O. (Monterey California. Naval Postgraduate School, 2007-09);
    In this thesis, an autonomous feature extraction algorithm for classification of Low Probability of Intercept (LPI) radar modulations is investigated. A software engineering architecture that allows a full investigation ...
  • Thumbnail

    Severe Performance Effects of Combined Jamming Interferences and Rayleigh Fading with Mitigation using Joint Complex Spreading and MIMO 

    Romero, Ric A.; Ha, Tri T. (2013);
    In communications systems under jamming interference, it is customary to employ spread spectrum techniques to combat performance degradation. In systems with fading, spatial diversity techniques such as MIMO schemes are ...
NPS Dudley Knox LibraryDUDLEY KNOX LIBRARY
Feedback

411 Dyer Rd. Bldg. 339
Monterey, CA 93943
circdesk@nps.edu
(831) 656-2947
DSN 756-2947

    Federal Depository Library      


Start Your Research

Research Guides
Academic Writing
Ask a Librarian
Copyright at NPS
Graduate Writing Center
How to Cite
Library Liaisons
Research Tools
Thesis Processing Office

Find & Download

Databases List
Articles, Books & More
NPS Theses
NPS Faculty Publications: Calhoun
Journal Titles
Course Reserves

Use the Library

My Accounts
Request Article or Book
Borrow, Renew, Return
Tech Help
Remote Access
Workshops & Tours

For Faculty & Researchers
For International Students
For Alumni

Print, Copy, Scan, Fax
Rooms & Study Spaces
Floor Map
Computers & Software
Adapters, Lockers & More

Collections

NPS Archive: Calhoun
Restricted Resources
Special Collections & Archives
Federal Depository
Homeland Security Digital Library

About

Hours
Library Staff
About Us
Special Exhibits
Policies
Our Affiliates
Visit Us

NPS-Licensed Resources—Terms & Conditions
Copyright Notice

Naval Postgraduate School

Naval Postgraduate School
1 University Circle, Monterey, CA 93943
Driving Directions | Campus Map

This is an official U.S. Navy Website |  Please read our Privacy Policy Notice  |  FOIA |  Section 508 |  No FEAR Act |  Whistleblower Protection |  Copyright and Accessibility |  Contact Webmaster

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

A logged-in user can export up to 15000 items. If you're not logged in, you can export no more than 500 items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.