By Topic

Robust Transmission over Frequency Selective Fast Fading Channels with Noncoherent Turbo Detection

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
$33 $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

4 Author(s)
Matthias Wetz ; Inst. of Inf. Technol., Univ. of Ulm, Ulm, Germany ; Daniel Huber ; Werner G. Teich ; Jurgen Lindner

Noncoherently detected frequency shift keying can be used in fast fading environments where it is difficult to track the channel. In this paper we present two methods to improve the performance of iteratively detected OFDM-MFSK. OFDM-MFSK is a combination of orthogonal frequency division multiplexing (OFDM) and noncoherent M-ary frequency shift keying (MFSK) that was developed as a robust transmission method for fast time varying channels. The first method increases the number of bits per label and therefore leads to an increased data rate, but also to an ambiguous mapping which has to be resolved by the channel decoder. In the second method, a precoder is inserted between the channel coder and the mapper, leading to a system of three serially concatenated codes. To analyze the iterative behavior of the receiver, we will use three dimensional EXIT charts, which allow us to predict the performance. The intention of both methods is to adapt the channel code to the modulation scheme in order to improve the performance of the iterative receiver.

Published in:

Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th

Date of Conference:

20-23 Sept. 2009