Power optimizing method for two-way full-duplex MIMO (massive multiple input multiple output) antenna relay system

Abstract

The invention provides a power optimizing method for a two-way full-duplex MIMO (massive multiple input multiple output) antenna relay system. The method comprises the steps as follows: step 1, establishing the two-way full-duplex MIMO antenna relay system; step 2, sending state information to a relay through all user terminals; step 3, collecting statistical information of large-scale fading between all users and the relay through the relay; step 4, setting the number of iterations, and calculating initial SINR (signal to interference plus noise ratio) of each user; step 5, solving a geometric programming problem about the SINR, user power and relay power to obtain optimal solutions of the user power and relay power in the geometric programming problem; step 6, performing zero determining; step 7, performing convergence determining; step 8, automatically adding 1 to the number of iterations, setting an initial SINR value of the next iteration, and returning to execute the step 5; step 9, ending power optimization. The method has the advantages of reducing the complexity and power consumption of the system and greatly improving the accessibility and rate of the system by adopting the priori statistical information of large-scale fading.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a power optimization method for a two-way full-duplex large-scale antenna relay system. Background technique [0002] With the development of wireless communication technology, mobile Internet traffic will increase by 1000 times by 2020. However, the current cellular network technology cannot support the exponential growth of wireless data and the access of massive wireless devices. The fifth-generation cellular network communication is said to bring a 1,000-fold increase in system capacity and provide many new features, such as supporting access to massive low-power devices, expanding coverage, improving reliability, and reducing latency. These goals need to be achieved using some new technologies, such as massive multiple antenna (massive Multiple Input Multiple Output, MIMO) technology, full-duplex technology, cooperative relay technology, millimeter wave commu...

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Problems solved by technology

[0003] In the prior art, the power distribution of the unidirectional full-duplex large-scale antenna relay and the power optimization of the full-duplex relay system in the case of non-large-scale antennas have been considered, but it has not involved the two-way full-duplex large-scale antenna Power Optimization Method for Relay System

The existing power optimization method in the prior art is to allocate power according to the change of instantaneous channel state information. Obviously, this method has high complexity and large calculation power consumption

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