Cart (Loading....) | Create Account
Close category search window
 

A practical approach for coherent signal surveillance and blind parameter assessment in asynchoronous DS-CDMA systems in multipath channel

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Khodadad, F.S. ; Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran ; Ganji, F. ; Aref, M.R.

A novel, robust and practical method for active user enumeration in asynchronous CDMA in multipath channel condition is proposed in this paper. Most of the previous works do not consider the fact that in practical case, user's signals with the help of receiver arrive asynchronously. The proposed method can be used practically in blind multi-user detection such as eavesdropping; moreover, the method is based on information theory criteria which outperform other methods. Minimum description length (MDL) has better performance than all other information criteria used in such scenarios. Unlike most of the pervious works, we do not exploit array antenna to gather necessary data of the users. However our proposed method needs a simple omnidirectional antenna which simplifies receiver's structure and reduces its costs. Also, this exploitation provides us the ability to use our proposed algorithm in coherent signal case. Similar to some other information criterion based methods, our method exploits the users' code length as an input which is not appropriate for blind active user enumeration. A novel Pseudo Noise (PN) code detection approach is also presented in this paper to tackle this problem. Presented numerical results confirm our claims and focus on efficiency of algorithm in detection and exact enumeration of active users in low SNRs and multipath environment.

Published in:

Electrical Engineering (ICEE), 2010 18th Iranian Conference on

Date of Conference:

11-13 May 2010

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.