METHODS FOR DETECTING SYMBOL OF SPATIAL MULTIPLEXING USING HIERARCHICAL MODULATION, RECEIVING METHODS AND DEVICES FOR SPATIAL MULTIPLEXING MIMO SYSTEM USING HIERARCHICAL MODULATION

摘要

PURPOSE: A method for detecting symbol of spatial multiplexing using hierarchical modulation, Receiving methods and devices for spatial multiplexing MIMO system using hierarchical modulation are provided to minimize the loss according to the property of the mobile communications channel and user interference. CONSTITUTION: According to the size of the receive signal to noise ratio, and the arrangement parameter and information rank, the bit error ratio of each stream is expected and the stream decipher symbol is defined by arranging the domain of each stream(S20). The detection ordering of the decipher symbol pitches is determined by deciding the channel matrix order mode with the forward direction or the reverse direction(S30) According to the channel matrix order mode, channel is disassembled QR(S40). The estimation decipher symbol for the interference cancellation is detected(S50). The estimation decipher symbol for the final decipher is detected(S60).