Hardware framework and method for matrix inversion in large-scale MIMO linear detection

Abstract

The invention discloses a hardware framework for matrix inversion in large-scale MIMO linear detection. The hardware framework comprises a pre-computation module and a matrix inversion sub-module, wherein the pre-computation module comprises a lower triangular pulse multiplier, an adder, a conjugate transpose module, a reciprocal module, a negation module and a vector multiplier, the lower triangular pulse multiplier is respectively connected with the adder and the conjugate transpose module, the adder is connected with the vector multiplier through the reciprocal module and the negation module sequentially, the conjugate transpose module is connected with the vector multiplier, the matrix inversion sub-module is of an IIR filter structure, and the vector multiplier and the reciprocal module are respectively connected with the matrix inversion sub-module. The invention further provides a method for matrix inversion in large-scale MIMO linear detection. By the hardware framework and the method, computation complexity and hardware cost are lowered greatly, optional precision accuracy can be obtained by iterative computation, high flexibility is provided, extra hardware cost is avoided, and good compatibility is achieved.

Description

technical field [0001] The invention belongs to the field of computer communication. In particular, it relates to a hardware framework and method for matrix inversion in massive MIMO linear detection. Background technique [0002] A system using multiple transmit antennas and multiple receive antennas in a wireless communication transmission environment is called a multiple-input multiple-output MIMO system. Studies have shown that MIMO wireless transmission technology can greatly improve the reliability of the transmission link, reduce the energy consumption of the base station, and double the capacity of the communication system without increasing the additional spectrum bandwidth. As a key technology of wireless communication, MIMO has been included in the fourth generation mobile communication standards, such as 3GPP LTE. [0003] With the further development and needs of the next-generation mobile communication technology, MIMO technology has expanded from the traditi...

AI Technical Summary

Problems solved by technology

In a scale MIMO system, when M becomes larger, its complexity will increase sharply, which will consume a large amount of computing resources of the system or increase the delay time

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