INTERFERENCE SIGNAL REMOVING DEVICE AND INTERFERENCE SIGNAL REMOVING METHOD

摘要

Respective threshold value judging units (108-1 to n) compare likelihoods calculated by corresponding likelihood calculators (106-1 to n) in magnitude with a threshold value stored in a threshold buffer (109), and, only when a likelihood is larger than a threshold value, output a signal representing that likelihood to a likelihood buffer (111) via a likelihood transmission bus (110). Ranking deciding unit (112) ranks symbols having likelihoods larger than a preset threshold value based on likelihoods stored in the likelihood buffer (111), whereby reducing a bus traffic and limiting throughputs required to rank all the symbols yet to be demodulated.