A Comparison of Decoding Latency for Block and Convolutional Codes
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| Název: | A Comparison of Decoding Latency for Block and Convolutional Codes |
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| Autoři: | Moritz Kaiser, Wai Fong, Marcin Sikora, Daniel J. Costello, Jr. |
| Přispěvatelé: | The Pennsylvania State University CiteSeerX Archives |
| Zdroj: | http://www.mmk.ei.tum.de/publ/pdf/09/09kai2.pdf. |
| Rok vydání: | 2009 |
| Sbírka: | CiteSeerX |
| Popis: | In this paper we compare the decoding latency, i.e., the delay between the time a channel symbol is received and the time it is decoded, of block and convolutional codes. In particular, we compare low density parity check (LDPC) block codes with iterative message-passing decoding to convolutional codes with Viterbi decoding and stack sequential decoding. On the basis of simulations, we show that, for a code rate of 1/2, a target bit error rate of 10 −4, and an allowed latency of up to approximately 2000 information bits, convolutional codes with stack sequential decoding require a smaller signal-to-noise ratio (SNR) than LDPC codes with iterative message-passing decoding. For larger allowed latencies, the advantage switches to LDPC codes. |
| Druh dokumentu: | text |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.364.4627; http://www.mmk.ei.tum.de/publ/pdf/09/09kai2.pdf |
| Dostupnost: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.364.4627 http://www.mmk.ei.tum.de/publ/pdf/09/09kai2.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Přístupové číslo: | edsbas.FE3784ED |
| Databáze: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | In this paper we compare the decoding latency, i.e., the delay between the time a channel symbol is received and the time it is decoded, of block and convolutional codes. In particular, we compare low density parity check (LDPC) block codes with iterative message-passing decoding to convolutional codes with Viterbi decoding and stack sequential decoding. On the basis of simulations, we show that, for a code rate of 1/2, a target bit error rate of 10 −4, and an allowed latency of up to approximately 2000 information bits, convolutional codes with stack sequential decoding require a smaller signal-to-noise ratio (SNR) than LDPC codes with iterative message-passing decoding. For larger allowed latencies, the advantage switches to LDPC codes. |
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