Abstract
In this paper, we propose an iterative belief propagation (BP) based equalizer for frequency selective fading channels as an alternative to the typically used maximum a-posteriori (MAP), Viterbi, or soft output Viterbi algorithm (SOVA) based equalizers. The proposed equalizer has a parallel structure unlike the trellis based equalizers and it is less complicated than the MAP equalizer. Via simulations we show that, over frequency selective fading channels, a BP based equalizer achieves the optimal maximum a-posteriori performance, even in the presence of the length 4 cycles. We also discuss the joint decoding of an outer error correcting code and the equalization of the frequency selective fading channel using a joint factor graph and a BP based equalizer.
Original language | English (US) |
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Title of host publication | IEEE Vehicular Technology Conference |
Pages | 1367-1371 |
Number of pages | 5 |
Volume | 60 |
Edition | 2 |
State | Published - 2004 |
Event | 2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States Duration: Sep 26 2004 → Sep 29 2004 |
Other
Other | 2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security |
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Country/Territory | United States |
City | Los Angeles, CA |
Period | 9/26/04 → 9/29/04 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering