MAXIMUM LIKELIHOOD GROUP ESTIMATION RECEIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain a favorable characteristic by using a branch metric where a diversity is composited by means of plural reception filters so as to calculate error power and execute generation. ;SOLUTION: Plural branch metric generating parts 1 are provided and a filter processing is executed to respective system receiving signals 101 inputted from plural antennas in accordance with respective system tap coefficients 109 from a tap coefficient estimating part 7. Then, addition is executed to the respective system total outputs so as to be outputted as a diversity combination result. A replica as an estimated value for an inter-code interference component is generated as against a transmission data candidate 108 to be referred from a branch transition pattern table 6. Moreover, subtraction between the diversity combination result and the replica is executed, square difference subtraction between the replica which is generated as the estimated value as against the transmission data component of an actual time and the transmission data candidate 108 of the actual time to be referred from the branch transition pattern table 6 is executed and the branch metric 102 as likelihood as against a branch is generated.;COPYRIGHT: (C)1997,JPO