Hybrid threshold soft decision decoding algorithm

1994 ◽  
Vol 141 (3) ◽  
pp. 126
Author(s):  
Y. Chang
Keyword(s):  
Soft Decision ◽  
Decoding Algorithm ◽  
Soft Decision Decoding

scholarly journals Improved Decoding of Linear Block Codes by Concatenated Decoders

2020 ◽  
Vol 8 (5) ◽  
pp. 363-371
Keyword(s):  
Communication Channel ◽  
Block Codes ◽  
Dual Code ◽  
Soft Decision ◽  
Decoding Algorithm ◽  
Word Decoding ◽  
Decoding Algorithms ◽  
Linear Block Codes ◽  
Temporal Complexity ◽  
Soft Decision Decoding

The use of decoding algorithms allows us to retrieve information after transmitting it over a noisy communication channel. Soft decision decoding is powerful in concatenation schemes that use two or more levels of decoding. In our case, we make a concatenation between the Hartmann & Rudolph (HR) algorithm as symbol-by-symbol decoder and the chase-2 algorithm that is word-to-word decoding algorithm. In this paper, we propose to combine two decoding algorithms for constructing a new one with more efficiency and less complexity. This work consists firstly to use the HR with a reduced number of codewords of the dual code then the Chase-2 algorithm which exploits the output of PHR. The simulations results and the comparisons made show that the proposed decoding scheme guarantees very good performance with reduced temporal complexity.

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