The present invention discloses a test method and a testing apparatus for type 3i receivers which use multicarrier operation in HSDPA. The method sequentially tests each carrier, one at a time. Applying multi-switches, channel emulators and efficient wirings, performance tests can be performed without any need for changing the User Equipment to be tested. In case a single carrier test is passed, the next carrier is selected for the test. All carriers are thus tested sequentially against a single carrier throughput requirement until all carriers have been processed.