Testing apparatus and method for MIMO systems

摘要

Four (=M) transmission information signals are output from transmission information generating unit to linear transform unit, where they are transformed into synthesis signals by linear transform expressed by multiplication by a 2×4 matrix having complex numbers as elements. Signal processors perform signal processing corresponding to the modulation technique of test target on synthesis signals. On the resultant signals, 2×2 channel processing unit performs 2×2 pseudo channel processing, thereby forming equivalent M×N channels. Parameter setting unit sets information necessary to acquire desired M×N channel characteristics as the synthesis characteristics of linear transform unit and N×N channel processing unit.

主权项

1. A test apparatus for testing a test target that includes a terminal, a circuit board incorporated in the terminal, or an integrated circuit mounted on the circuit board, the terminal utilizing an M×N (M>N) MIMO scheme in which M antennas are provided on a base station side, and N antennas are provided on a terminal side, the test apparatus including a transmission information generating unit configured to output transmission information of M series signals to be sent to the test target, the test apparatus comprising:
a linear transform unit configured to receive the transmission information of M series signals and designated parameter information, and to transform the received transmission information of M series signals into N synthesis signals by linear transform expressed by multiplication by a matrix of N rows and M columns that includes complex numbers as elements; N signal processing units configured to perform, on the N synthesis signals, signal processing corresponding to a modulation technique of the test target; an N×N propagation channel processing unit configured to perform N×N pseudo propagation channel processing on N signals output from the N signal processing units, based on designated propagation channel information, and to supply resultant N signals to the test target; and a parameter setting unit configured to set information in the linear transform unit and the N×N propagation channel processing unit to acquire desired M×N propagation channel characteristics as synthesis characteristics of the linear transform unit and the N×N propagation channel processing unit.