Method, device and system for realizing microwave multiple input and multiple output

Abstract

The present invention provides a method, device and system for implementing microwave multiple-input multiple-output, relating to the field of wireless communications. The device includes a transmit channel correction module including a transmission energy distributor and a transmission coupler; the transmission energy distributor decomposes, according to a first energy distribution parameter, each channel of transmitted signals among N channels of transmitted signals into channels of transmitted sub-signals, where the number of the channels of transmitted sub-signals is the same as the number of transmit antennas, the number of transmit antennas is N, and N is a natural number greater than 1; and the transmission coupler performs phase processing on each channel of transmitted sub-signals according to a first phase parameter, selects one channel of phase-processed transmitted sub-signals from each of the N channels of transmitted signals, and combines them to obtain N channels of output signals. The present invention reduces the number of channel conditions in a MIMO system, so that a channel cascade result is equivalent to an impact of multipath on a channel, and channels in a microwave MIMO system can maintain orthogonality, thereby supporting independent transmission of multiple data streams. In addition, extra hardware is not required, achieving a smaller area of an antenna array.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method, device and system for realizing microwave multiple-input multiple-output. Background technique [0002] Compared with the SISO (Single-input Single-output, single-input single-output) system, the MIMO (Multi-input Multi-output) system can increase the channel capacity. The wireless MIMO system assumes that the channel is Rayleigh fading: the channel has no direct path, but has abundant multipath. At this time, the capacity of the MIMO channel can increase linearly according to the number of antennas. [0003] For microwave channels, usually the system has a strong direct path, and the channel can be simulated as Rician fading at this time. In Rician fading channels, the channel matrix is ​​usually in a low-rank state, that is, the partial MIMO channel matrix eigenvalue λ i is 0, according to the Shannon formula where λ i is the eigenvalue of the MIMO channel ...

AI Technical Summary

Problems solved by technology

[0008] The first solution requires additional relay base stations to increase the capacity of the microwave MIMO system. The hardware cost is high, and the location of the relay base station is also very critical, making networking more difficult;

[0009] The second scheme has a larger interval between transceiver antennas and a larger area of ​​the antenna array, and the antenna array is not easy to implement

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