Method and apparatus for code group identification and frame...

Details Method and apparatus for code group identification and frame... Method and apparatus for code group identification and frame...

2002-12-10

2009-12-15

Nguyen, Hanh (Department: 2416)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S350000, C370S479000, C375S365000, C375S240280

Reexamination Certificate

active

07633976

ABSTRACT:
A method and apparatus having a modified Reed-Solomon decoder is used for finding a specific code group used by a base station and the frame timing synchronization with the base station. The modified Reed-Solomon decoder uses a standard Reed-Solomon decoder and some reliability measurements computed from the received code word symbols. If the reliability of a received symbol is too low, this symbol is considered as erasure. By selecting code word symbols with higher reliabilities and erasing code word symbols with lower reliabilities, the symbol error probability is reduced and the performance is improved. Several modified Reed-Solomon decoders and a few decoding strategies are introduced in order to decode the received code word sequences with a power- and memory-effective method.

REFERENCES:
patent: 6185244 (2001-02-01), Nystrom et al.
patent: 6775318 (2004-08-01), Chen et al.
patent: 6990091 (2006-01-01), Sarkar
patent: 7126981 (2006-10-01), Ho et al.

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