Combined input signal MIMO (Multiple Input Multiple Output) radio communication receiving end and signal detection method thereof

Abstract

The invention relates to the technology of communication, solves the defect that the detection cannot be carried out due to the fact that the detection complexity is too high when the number of transmitted signals is relatively high in an existing combined input signal MIMO (Multiple Input Multiple Output) radio communication system and provides a combined input signal MIMO radio communication receiving end and a signal detection method thereof. The technical scheme can be summarized as the fact that according to the combined input signal MIMO radio communication receiving end, a reference signal input end thereof is connected with a system state information processing module; a plurality of receiving antennas are connected with a linear detection module; the linear detection module is connected with maximum likelihood detection modules; the maximum likelihood detection modules are connected with corresponding system output ends; and the system state information processing module is connected with the maximum likelihood detection modules, the linear detection module and the system output ends. The combined input signal MIMO radio communication receiving end and the signal detectionmethod thereof have the beneficial effect of relatively low complexity and is applicable to the combined input signal MIMO radio communication system.

Description

technical field [0001] The present invention relates to communication technology, in particular to the technology of wireless communication system. Background technique [0002] The existing NOMA-MIMO (Non-Orthogonal Multiple Access-Multiple Input Multiple Output) system uses a power multiplexing method to improve system capacity and spectrum efficiency, which is characterized by assigning different signal power to different users through power multiplexing technology at the transmitting end , the signals of different users are distinguished by Serial Interference Cancellation (SIC) at the receiving end. [0003] SIC adopts the strategy of eliminating interference step by step, and judges users one by one in the received signal, first subtracts the multiple access interference generated by one user from the received signal, and then makes judgments and multiple access interference on the remaining user signals one by one Eliminate, and operate in a loop until all multiple a...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the detection complexity is too high to be implemented when there are many transmission signal channels in the current combined input signal MIMO wireless communication system, such as a massive MIMO system, and to provide a combined input signal MIMO wireless communication system. Receiver and its signal detection method

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