Soft-input soft-output decoding of variable length codes
We present a method for utilizing soft information in decoding of variable length codes (VLCs). When compared with traditional VLC decoding, which is performed using "hard" input bits and a state machine, the soft-input VLC decoding offers improved performance in terms of packet and symbol...
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| Veröffentlicht in: | IEEE transactions on communications 2002-05, Vol.50 (5), p.689-692 |
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| container_title | IEEE transactions on communications |
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| creator | Jiangtao Wen Villasenor, J. |
| description | We present a method for utilizing soft information in decoding of variable length codes (VLCs). When compared with traditional VLC decoding, which is performed using "hard" input bits and a state machine, the soft-input VLC decoding offers improved performance in terms of packet and symbol error rates. Soft-input VLC decoding is free from the risk, encountered in hard decision VLC decoders in noisy environments, of terminating the decoding in an unsynchronized state, and it offers the possibility to exploit a priori knowledge, if available, of the number of symbols contained in the packet. |
| doi_str_mv | 10.1109/TCOMM.2002.1006449 |
| format | Article |
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When compared with traditional VLC decoding, which is performed using "hard" input bits and a state machine, the soft-input VLC decoding offers improved performance in terms of packet and symbol error rates. 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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Additive white noise AWGN Channel coding Decoders Decoding Entropy Error analysis Errors Heuristic algorithms Performance enhancement Redundancy Risk State machines Stopping Symbols Viterbi algorithm Working environment noise |
| title | Soft-input soft-output decoding of variable length codes |
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