Patent ID: 9106297
Filing Date: 2015-08-11
Classification: H04B

Abstract:
1. A receiving apparatus which has N pieces of receiving antennas where N is an integer of 2 or more and which receives a signal transmitted from a transmitting apparatus which has a plurality of transmitting antennas and performs spatial multiplexing with nonlinear precoding using nonlinear arithmetic, wherein, a signal which is generated by sequentially subtracting interference from a desired signal based on channel state information between the transmitting apparatus and the plurality of receiving apparatuses and which subjected to spatial multiplexing with the non-linear precoding using a modulo-arithmetic operation, is received by the N pieces of the receiving antennas, a receiving weight is calculated based on a term representing a coefficient of the interference subtracted sequentially from the desired signal, the received signal is multiplied by the receiving weight to be combined, and the modulo-arithmetic operation is performed to the combined signal so that a desired signal is detected, wherein the receiving weight has a term of I-F where I is a unit matrix and F shows a coefficient matrix.