Liu Bin, Wang Xinmei. IMPROVING CHASE2 ALGORIHTM WITH A VARIABLE SOFT DISTANCE THRESHOLD[J]. Journal of Electronics & Information Technology, 1997, 19(3): 411-415.
Citation:
Liu Bin, Wang Xinmei. IMPROVING CHASE2 ALGORIHTM WITH A VARIABLE SOFT DISTANCE THRESHOLD[J]. Journal of Electronics & Information Technology, 1997, 19(3): 411-415.
Liu Bin, Wang Xinmei. IMPROVING CHASE2 ALGORIHTM WITH A VARIABLE SOFT DISTANCE THRESHOLD[J]. Journal of Electronics & Information Technology, 1997, 19(3): 411-415.
Citation:
Liu Bin, Wang Xinmei. IMPROVING CHASE2 ALGORIHTM WITH A VARIABLE SOFT DISTANCE THRESHOLD[J]. Journal of Electronics & Information Technology, 1997, 19(3): 411-415.
The lower bound of the soft weight of the error pattern which is beyond the error-correction capbility is calculated. The result is used to prove the equivalence of decoding performance of Chase2 algorithm and maximum likelihood decoding algorithm when the received sequence is subject to the generalized threshold in Ref.2. A variable threshold based on the confidence of received sequence is proposed to improve the speed of the soft decision decoding of linear blocks without performance loss.
Chase D. A class of algorithm for decoding block codes with channel measurement information. IEEE Trans. on IT, 1972, IT-18(1): 170-182.[2]王新梅.广义门限蔡斯算法.电子科学学刊,1986, 8(6): 401-407.[3]Hackett C M. An efficient algorithm for soft-decision decoding of the (24,12) extended Golay code.[4]IEEE Trans. on Com., 1981, COM-29(6): 909-911.[5]陈志,范平志,靳蕾.分组码的一种高效软判决译码算法.电子学报,1990, 18(5): 111-114.[6]Liu Bin, Wang Xinmei. An efficient soft-decision decoding algorithm for (24,12,8) Golay code. Proc.[7]ICCT94 Shanghai: June, 1994, 800-802.
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