| Autor: |
Jyothula, Sudhakar, Maheswari, Abbireddy Uma |
| Předmět: |
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| Zdroj: |
Defence S&T Technical Bulletin; 2017, Vol. 10 Issue 1, p24-32, 9p |
| Abstrakt: |
In this paper, we develop a Viterbi decoder for underwater ITU-V.34 standard marine receivers. In order to have low power and to accomplish faithful quality of transmission, clockless approaches are found to better alternatives. The underwater message channel is not only band limited, but motionless as well and mostly difficult because of strong distortions. In view of this, underwater communications is the focus of exhaustive research aiming to accomplish higher data rates with optimized delay requirements. Null convention logic (NCL) is the traditional asynchronous design approach with which draw backs of clock distribution, power or delay are overcome. In order to obtain both advantages, we incorporate a multi-threshold approach in the NCL, known as Multi-Threshold NCL (MTNCL). The proposed method of Viterbi decoder is designed using Xilinx tools and is compared with the performance of conventional complementary metal oxide Semiconductor (CMOS) and asynchronous NCL design in terms of power savings. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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