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タイトル: | Parallel Viterbi Decoding Implementation by Multi-microprocessors |
著者: | ZHAO, Hui YUAN, Xiao Kang SATO, Toru KIMURA, Iwane |
発行日: | 30-Apr-1992 |
出版者: | Faculty of Engineering, Kyoto University |
誌名: | Memoirs of the Faculty of Engineering, Kyoto University |
巻: | 54 |
号: | 2 |
開始ページ: | 105 |
終了ページ: | 118 |
抄録: | The Viterbi algorithm is a well-established technique for channel and source decoding in high performance digital communication systems. However, excessive time consumption makes it difficult to design an efficient highspeed decoder for practical application. The central unit of a Viterbi decoder is a data-dependent feedback loop which performs an add-compare-select (ACS) operation. This nonlinear recurrence is the bottleneck for a high-speed parallel implementation. This paper describes the implementation of parallel Viterbi algorithm by multi-microprocessors. Internal computations are performed in a parallel fashion. The use of microprocessors allows low-cost implementation with moderate complexity. An organization network, separate memory blocks and programs provide proper operation. For a fixed processing speed of given hardware parallel Viterbi decoding allows a linear speed up in the throughput rate by a linear increase in hardware complexity. |
URI: | http://hdl.handle.net/2433/281453 |
出現コレクション: | Vol.54 Part 2 |
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