Variable-bit-rate speech transmission using punctured convolutional codes

1992 ◽  
Vol 40 (2) ◽  
pp. 443-446 ◽  
Author(s):  
G.E. Atkin ◽  
C.-C. Tam
Keyword(s):  
Convolutional Codes ◽  
Variable Bit Rate ◽  
Bit Rate ◽  
Speech Transmission ◽  
Punctured Convolutional Codes

scholarly journals Research on Block-Based Blind Identification of High-rate Punctured Convolutional Codes

2018 ◽  
Vol 176 ◽  
pp. 01037
Author(s):  
Hua Yan ◽  
Ying Huang ◽  
Baoguo Li ◽  
Jing Lei
Keyword(s):  
Fault Tolerance ◽  
Hadamard Matrix ◽  
Convolutional Codes ◽  
Recognition Algorithm ◽  
High Rate ◽  
Bit Rate ◽  
Simulation Experiments ◽  
High Bit Rate ◽  
Punctured Convolutional Codes ◽  
Block Based

Aiming at the large amount of memory in high bit rate punctured convolutional codes, a soft recognition algorithm based on block Hadamard matrix (B-SWHT) is proposed. By using the idea of block Hadamard matrix operation, the soft WHT algorithm with excellent fault-tolerance performance is applied to the recognition of high-rate punctured convolutional codes. The simulation experiments show that the algorithm can effectively reduce the memory required for the recognition of high-rate punctured convolutional codes while maintaining high fault-tolerance performance. This paper provides a feasible solution for the identification of high bit rate punctured convolutional codes.

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