Large-scale MIMO (Multiple-Input Multiple-Output) detecting method and device
A detection method and detection device technology, which are applied in the directions of space transmit diversity, shaping network in transmitter/receiver, transmission system, etc. Detecting the effect of improved performance
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[0028] The technical solution of the present invention will be described in detail below in conjunction with the drawings:
[0029] The basic principle of the existing real number domain BP detection algorithm is as follows: in the MIMO system, its equivalent real number domain model is used to construct the corresponding factor graph, and the complex number domain operation is converted to the real number domain operation to realize the iterative detection based on BP. Among them, the transmitted signal is called the "signal node", and the received signal is called the "observation node". First, each signal node updates the prior information according to the posterior information obtained from the variable node, and then transmits it to all the observation nodes connected to it. Second, each observation node calculates the posterior information based on the prior information from the signal node, and then transmits it back to the signal node connected to it. Thus, a message upd...
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