| 摘要 |
A unified decoder (10) is capable of decoding data encoded with convolutional codes, Turbo codes and LDPC codes. The decoder comprises a first set (20, . . . ,44) and a second set (26, . . . ,30) of trellis processors for calculating path metrics during decoding of convolutional codes and for calculating alpha and beta metrics during decoding of turbo and LDPC codes. The decoder further comprises a normalization unit for the normalization of metrics (46), a set of reliability calculators, a trace back unit (32) and two alpha-beta swap units (38,40) for the redistribution of the metrics to the trellis processors. In at least one embodiment, a unified decoder is implemented within a multi-standard wireless device.
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