Abstract: A method and arrangement for generating data for transmitter or receiver simulations where the generated data includes Multiple Input Multiple Output radio environment (MIMO) characteristics. The arrangement includes a model data (11), which is off-line loadable to transmitter baseband unit (12). The model data is transmitted over a MIMO environment (14, 24), which scrambles the transmitted data. A receiver baseband unit (16) receives and saves the data. From the receiver baseband unit (16) the received data is loadable off-line to an external device where the data can be utilized in transmitter or receiver algorithm simulations.

Abstract: The invention relates to a method, a testing arrangement, a testing device, an 8B/10B encoder and an 8B/10B decoder, with which the recovery from a 8B/10B encoding error of a device using serial data transmission may be tested. The 8B/10B encoder (302) according to the invention in a transmitting device (30) may create code words unspecified in the ANSI INCITS 203-1994 standard for testing. The 8B/10B decoder (312) in a receiving device (31) is able to indicate having converted a code word unspecified in the ANSI INCITS 203-1994 standard and having entered a testing mode. The testing device (33) connected to the receiving device commences monitoring of the receiving device (31), when the 8B/10B decoder (312) pertaining to it indicates the system having entered the testing mode.