Input data vector calculation method and device of channel emulator and channel emulator

Abstract

An embodiment of the invention provides a calculation method and device for input data vectors of a channel simulation instrument and the channel simulation instrument. The method comprises the following steps: channel vectors and input data vectors, with quantities equal to the quantity of ranks of a preset low-rank total correlation matrix, in a channel matrix of the channel simulation instrument are subjected to convolution when the input data vectors are acquired, and a convolution item is obtained; a Gaussian distribution model is established for channel vectors, except the channel vectors, with the quantity equal to the quantity of the ranks of the preset low-rank total correlation matrix, in the channel matrix, the channel vectors and the input data vectors of the channel simulation instrument are subjected to convolution, and an additive white Gaussian noise item is obtained; the convolution item and the additive white Gaussian noise item are subjected to summing, and output data vectors corresponding to the input data vectors are obtained. According to the embodiment, total complex calculation is divided into two simple calculations through rank reduction of the channel matrix, the data calculation amount of the channel simulation instrument in a calculation process is reduced, and the design cost of the channel simulation instrument can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for calculating input data vectors of a channel emulator and a channel emulator. Background technique [0002] With the development of communication technology, users have higher and higher requirements for wireless communication. In order to meet the needs of users, a large-scale MIMO (Multi-input Multi-output) communication system is usually adopted. number to increase available channels. [0003] The channel emulator (also known as the channel simulator) is located between the transmitting signal and the receiving signal, and there are multiple radio frequency ports on it, a part of the radio frequency ports are used as input ports for connecting the transmitting antenna of the MIMO communication system, and a part of the radio frequency ports are used as output ports The port is used to connect the receiving antenna of the MIMO communicatio...

AI Technical Summary

Problems solved by technology

[0016] From the above formula, it can be seen that in the case of multi-path, the complexity of data computation is at least M×N p , such a huge amount of calculation seriously affects the calculation speed of the channel emulator

Images