EXIT Analysis for MAP-Based Joint Iterative Decoding of Separately Encoded Correlated Sources

2010 ◽  
Vol E93-B (12) ◽  
pp. 3509-3513
Author(s):  
Kentaro KOBAYASHI ◽  
Takaya YAMAZATO ◽  
Masaaki KATAYAMA
Keyword(s):  
Iterative Decoding ◽  
Correlated Sources ◽  
Joint Iterative Decoding ◽  
Exit Analysis

scholarly journals A Deterministic Construction for Jointly Designed Quasicyclic LDPC Coded-Relay Cooperation

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Muhammad Asif ◽  
Wuyang Zhou ◽  
Qingping Yu ◽  
Xingwang Li ◽  
Nauman Ali Khan
Keyword(s):  
Fading Channels ◽  
Iterative Decoding ◽  
Rayleigh Fading ◽  
Additive White Gaussian Noise ◽  
Ldpc Codes ◽  
Destination Node ◽  
Relay Nodes ◽  
Binary Matrix ◽  
Relay Cooperation ◽  
Joint Iterative Decoding

This correspondence presents a jointly designed quasicyclic (QC) low-density parity-check (LDPC) coded-relay cooperation with joint-iterative decoding in the destination node. Firstly, a design-theoretic construction of QC-LDPC codes based on a combinatoric design approach known as optical orthogonal codes (OOC) is presented. Proposed OOC-based construction gives three classes of binary QC-LDPC codes with no length-4 cycles by utilizing some known ingredients including binary matrix dispersion of elements of finite field, incidence matrices, and circulant decomposition. Secondly, the proposed OOC-based construction gives an effective method to jointly design length-4 cycles free QC-LDPC codes for coded-relay cooperation, where sum-product algorithm- (SPA-) based joint-iterative decoding is used to decode the corrupted sequences coming from the source or relay nodes in different time frames over constituent Rayleigh fading channels. Based on the theoretical analysis and simulation results, proposed QC-LDPC coded-relay cooperations outperform their competitors under same conditions over the Rayleigh fading channel with additive white Gaussian noise.

scholarly journals Joint Iterative Decoding of Trellis-Based VQ and TCM

2007 ◽  
Vol 6 (4) ◽  
pp. 1327-1336 ◽  
Author(s):  
R. Maunder ◽  
J. Kliewer ◽  
S. Ng ◽  
J. Wang ◽  
L-L. Yang ◽  
...  
Keyword(s):  
Iterative Decoding ◽  
Joint Iterative Decoding
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