| 摘要 |
A diversity apparatus includes antennas 1a, 2a, demodulators 2a, 2b, and a Viterbi decoder 3 that has four ACS sections 41-44, and a path memory 5. Signals convolutionally encoded with a constraint length of 3 are received by two antennas 1a, 1b, are demodulated by the demodulating sections 2a, 2b, respectively, and are then outputted to all of the ACS sections 41-44. Such information coming from different routes are subjected to route selection and ACS processing simultaneously, thereby finding a code sequence (expected values) closest to received data sequences (the plurality of received signals). Then, the single path memory 5 is used to store and/or update the paths for error correction, and then corrected data Dout is outputted.
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