Hard Iterative Channel Decoding for PC -Based Software DVB-T Receiver by C Code
碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 99 === The previous scheme only modifies the Viterbi decoder input positions where the Reed-Solomon decoder makes sure they are correct. Besides that, we propose to change the parameter Q of the metrics of the Viterbi decoder input positions where the Reed-Solomon d...
| Main Authors: | , |
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| Format: | Others |
| Language: | en_US |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/b6svy4 |
| Summary: | 碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 99 === The previous scheme only modifies the Viterbi decoder input positions where the Reed-Solomon decoder makes sure they are correct. Besides that, we propose to change the parameter Q of the metrics of the Viterbi decoder input positions where the Reed-Solomon decoder makes sure they are incorrect. The Q is defined as the norm of channel state information (CSI), Q=|CSI|2. We propose to change Q to maximum for the Viterbi decoder input positions where the Reed-Solomon decoder makes sure they are incorrect, so the incorrect paths are unlikely to be selected in the Viterbi algorithm. The field test results show that the proposed scheme with Q modification outperforms the previous scheme without Q modification.
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