Logo IPI  
Journal > Journal of ICT Research and Applications > VLSI Architecture for Configurable and Low-Complexity Design of Hard-Decision Viterbi Decoding Algorithm

 

Full Text PDF (981 kb)
Journal of ICT Research and Applications
Vol 10, No 1 (2016)
VLSI Architecture for Configurable and Low-Complexity Design of Hard-Decision Viterbi Decoding Algorithm
Putra, Rachmad Vidya Wicaksana ( Microelectronics Center, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132,)
Adiono, Trio ( Microelectronics Center, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132,)
Article Info   ABSTRACT
Published date:
01 Jun 2016
 
Convolutional encoding and data decoding are fundamental processes in convolutional error correction. One of the most popular error correction methods in decoding is the Viterbi algorithm. It is extensively implemented in many digital communication applications. Its VLSI design challenges are about area, speed, power, complexity and configurability. In this research, we specifically propose a VLSI architecture for a configurable and low-complexity design of a hard-decision Viterbi decoding algorithm. The configurable and low-complexity design is achieved by designing a generic VLSI architecture, optimizing each processing element (PE) at the logical operation level and designing a conditional adapter. The proposed design can be configured for any predefined number of trace-backs, only by changing the trace-back parameter value. Its computational process only needs N + 2 clock cycles latency, with N is the number of trace-backs. Its configurability function has been proven for N = 8, N = 16, N = 32 and N = 64. Furthermore, the proposed design was synthesized and evaluated in Xilinx and Altera FPGA target boards for area consumption and speed performance.
Copyrights © 2016