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

Null-space Exploiting channel shortening prefilter (NE-CSP) for MIMO-OFDM

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

2 Author(s)
Singh, I. ; Dept. of Electr. Eng., IIT Madras, Chennai, India ; Giridhar, K.

In OFDM system, with fixed cyclic prefix (CP) length, inter block interference (IBI) and inter carrier interference will be present if the channel impulse response (CIR) is larger than the CP length. This problem can be mitigated by design a time domain filter at the receiver, which can shorten or shape the effective CIR to become less than the CP length. This paper proposes a novel method to design a channel shortening prefilter (CSP) for MIMO-OFDM systems, by defining a measurement model which has an underdetermined set of equations. This model is always applicable when the number of transmit antennas (actually transmit streams) is less than the number of receive antennas. The proposed Null-space Exploiting CSP (NE-CSP) removes the IBI and ICI nearly completely, but in the simplest form, has a loss in diversity. It is possible to reclaim this diversity by using the multiple layers (or filters) within the NE-CSP structure. Simulation results indicate that, compared to existing channel truncation methods, the NE-CSP is not only computationally attractive, but can also gives a gain of 3dB to 5dB in bit error rate performance (BER) performance at high SNRs.

Published in:

Communications (NCC), 2010 National Conference on

Date of Conference:

29-31 Jan. 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.