Apparatus and method for channel encoding/decoding in a...

Details Apparatus and method for channel encoding/decoding in a... Apparatus and method for channel encoding/decoding in a...

2005-04-26

2005-04-26

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C375S265000, C714S751000, C714S796000

Reexamination Certificate

active

06885710

ABSTRACT:
An apparatus and method for channel encoding/decoding are provided which vary an iterative decoding number according to service type, data class and channel condition. A message information receiver receives information about a message to be received. A controller determines an iterative decoding number according to the message information received. A decoder iteratively decodes the received message according to the determined iterative decoding number. The message information includes a class of received data, and the class includes a bit error rate (BER). The iterative decoding number is increased for a low BER as compared to a predetermined BER. Further, the class includes a permissible time delay, and the iterative decoding number is increased for a long permissible time delay as compared to a predetermined permissible time delay. In addition, the message information includes a service type of the received data, and the iterative decoding number is decreased when the service type is a moving picture service.

REFERENCES:
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patent: 6192503 (2001-02-01), Chennakeshu et al.
patent: 6252917 (2001-06-01), Freeman
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patent: 11-330984 (1999-11-01), None
patent: WO9912265 (1999-03-01), None
English language Abstract of Japanese Laid-Open Patent Application No. 11-191758, dated Jul. 13, 1999.

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