Normalization, windowing and quantization of soft-decision Viterbi decoder inputs in CDMA systems

2003 ◽  
Author(s):  
Y.K. Lee ◽  
H. Lou
Keyword(s):  
Viterbi Decoder ◽  
Soft Decision ◽  
Cdma Systems

A pipelined 8-bit soft decision viterbi decoder for IEEE802.11ac WLAN systems

2012 ◽  
Vol 58 (4) ◽  
pp. 1162-1168 ◽  
Author(s):  
Wonsun Yoo ◽  
Yunho Jung ◽  
Moo Kim ◽  
Seongjoo Lee
Keyword(s):  
Viterbi Decoder ◽  
Soft Decision

A High-throughput Parallel Viterbi Algorithm via Bitslicing

2021 ◽  
Vol 8 (4) ◽  
pp. 1-25
Author(s):  
Saleh Khalaj Monfared ◽  
Omid Hajihassani ◽  
Vahid Mohsseni ◽  
Dara Rahmati ◽  
Saeid Gorgin
Keyword(s):  
High Throughput ◽  
High Performance ◽  
Viterbi Algorithm ◽  
Data Representation ◽  
Processing Unit ◽  
Viterbi Decoder ◽  
Soft Decision ◽  
Content Type ◽  
Data Intensive ◽  
Representation Scheme

In this work, we present a novel bitsliced high-performance Viterbi algorithm suitable for high-throughput and data-intensive communication. A new column-major data representation scheme coupled with the bitsliced architecture is employed in our proposed Viterbi decoder that enables the maximum utilization of the parallel processing units in modern parallel accelerators. With the help of the proposed alteration of the data scheme, instead of the conventional bit-by-bit operations, 32-bit chunks of data are processed by each processing unit. This means that a single bitsliced parallel Viterbi decoder is capable of decoding 32 different chunks of data simultaneously. Here, the Viterbi’s Add-Compare-Select procedure is implemented with our proposed bitslicing technique, where it is shown that the bitsliced operations for the Viterbi internal functionalities are efficient in terms of their performance and complexity. We have achieved this level of high parallelism while keeping an acceptable bit error rate performance for our proposed methodology. Our suggested hard and soft-decision Viterbi decoder implementations on GPU platforms outperform the fastest previously proposed works by 4.3{\times } and 2.3{\times } , achieving 21.41 and 8.24 Gbps on Tesla V100, respectively.

Variable wordlength soft-decision Viterbi decoder for power-efficient wireless LAN

Integration ◽  
2012 ◽  
Vol 45 (2) ◽  
pp. 132-140 ◽  
Author(s):  
Jaeseong Kim ◽  
Shingo Yoshizawa ◽  
Yoshikazu Miyanaga
Keyword(s):  
Wireless Lan ◽  
Viterbi Decoder ◽  
Soft Decision ◽  
Power Efficient

Determination of cancellation factors for soft-decision partial PIC detector in DS/CDMA systems

2000 ◽  
Vol 36 (3) ◽  
pp. 239 ◽  
Author(s):  
Yue-heng Li ◽  
Ming Chen ◽  
Shi-xing Cheng
Keyword(s):  
Soft Decision ◽  
Cdma Systems
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