BP-based Approximation Methods For Rateless Codes
24th Signal Processing and Communication Application Conference (SIU), Zonguldak, Turkey, 16 - 19 May 2016, pp.1897-1900, (Full Text)
- Publication Type: Conference Paper / Full Text
- Volume:
- Doi Number: 10.1109/siu.2016.7496135
- City: Zonguldak
- Country: Turkey
- Page Numbers: pp.1897-1900
- Karadeniz Technical University Affiliated: Yes
Abstract
In this letter, belief propagation (BP) based approximation methods for low density parity check (LDPC) codes are adapted to the Luby transform (LT) soft decoder structure in order to reduce its computational complexity. The bit error rate (BER) performances of the algorithms over the binary input additive white Gaussian noise (BIAWGN) channel are obtained by both theoretically and simulations. For theoretical analysis, the Monte-Carlo density evolution (MC-DE) method is used. In addition, computational complexity analyzes of methods are presented. Results show that the computational complexity can be significantly decreased with a limited performance loss cost.