MIMO system and application method thereof for adaptive antenna selection

Abstract

The invention discloses an MIMO system and an application method thereof for adaptive antenna selection. The MIMO system comprises a transmitter, a receiver and a wireless channel; the process of the antenna selection which is realized in the MIMO system adopts an iterative feedback structure; a subset is selected quickly from a large amount of antenna sets by using the characteristic of 60 GHz channel without accurate channel estimation, so that a subchannel corresponding to an antenna subarray is optimal in the sense of a defined target function; and high speed data transmission is performed by using the selected optimal antenna subarray. The invention provides the rapid and efficient application method for the MIMO system along with low cost, and solves the technical problems of high complexity and low efficiency of the traditional antenna selection method in the large-scale the MIMO system. An experiment proves that: the adopted method can obtain good performance only through several iterations and low computational complexity; and the system can better support the application of the large-scale the antenna array.

Description

Technical field: [0001] The invention belongs to the communication field, and relates to a MIMO system and an application method thereof, in particular to a random optimization-based adaptive antenna selection method and a signal processing method thereof. Background technique: [0002] A multiple-input multiple-output (MIMO) system usually has multiple antennas at the transmitting end or the receiving end or both to form an antenna array. Using space multiplexing or transmit diversity, MIMO systems can gain channel capacity gains and improve system transmission performance. Therefore, the MIMO system (or multi-antenna system) becomes the preferred physical layer structure for future high-speed communication systems. It is not surprising that the 60GHz communication system, which is considered to be able to provide a transmission rate of up to several Gbps, uses a multi-antenna array as the front end of the transceiver. A proposal of the 802.15 working group dedicated to 6...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fast self-adaptive optimization method and signal processing method for a large-scale MIMO antenna array system and its antenna sub-array operating under 60GHz channel conditions, so as to solve the problem of the above-mentioned application background of the existing MIMO system. Antenna optimization selects the problem of low efficiency, thereby effectively reducing the power consumption and cost of the MIMO system, and improving the robustness of the system. Fast antenna selection problem

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