Spatially multiplexed multicarrier receiving apparatus, spatial multiplexing and multi-carrier reception method

摘要

PPROBLEM TO BE SOLVED: To greatly decrease the computational complexity of a likelihood metric while maintaining error rate characteristics. PSOLUTION: An initialization processing circuit 1 performs the processes of grouping subcarriers, generating representative channel matrixes representing respective subcarrier groups, determining the implementation order of signal point candidate selection for each group, determining the implementation order of signal point candidate selection for each subcarrier, performing matrix conversion, and so on. A transmission series candidate narrowing-down circuit 2 generates a conversion reception series, narrows down conversion transmission series candidates and calculates a likelihood metric, and puts the conversion transmission series candidates back into transmission series candidates so that processes by an estimated code bit calculation circuit 3 can be efficiently implemented. The estimated code bit calculation circuit 3 generates an estimated code bit for each transmission code bit using the transmission series candidates and likelihood metric for each of subcarriers belonging to each subcarrier group. PCOPYRIGHT: (C)2010,JPO&INPIT