MAP DECODER FOR DECIDING FUNCTION IN INTERFERENCE REMOVING DEVICE

摘要

PURPOSE: A MAP(Maximum a Posteriori Probability) decoder for a deciding function in an interference removing device is provided to install a signal deciding process in back-diffusion/deciding/diffusion/removing processes, so as to increase a capacity of the interference removing device and a symbol decoding capacity. CONSTITUTION: A probability calculator(21) calculates a probability from a back-diffusion function performance result value. A matrix generator(22) generates a matrix according to decoding symbol values every user from the calculated probability. A decoding symbol value decider(23) calculates an APP(A Posteriori Probability) value of a symbol from the generated matrix, and decides the decoding symbol values every user having a maximum probability from the calculated APP, then supplies the symbol values as input values in a re-diffusion function performance process.