Matrix Gerschgorin circle based transmitting antenna number blind estimation method

A technique for transmitting antenna number and blind estimation, applied in the direction of space transmit diversity, diversity/multi-antenna system, baseband system components, etc., to achieve the effect of solving frequency selective fading, improving real-time performance and strong robustness
CN106059639AActive Publication Date: 2016-10-26XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2016-10-26

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Abstract

The invention invention discloses a matrix Gerschgorin circle based transmitting antenna number blind estimation method. Efficient estimation of the number of transmitting antennas of an MIMO-OFDM system is realized without utilizing prior information such as a pilot frequency in the conditions of a frequency selective fading channel and residential frequency deviation. The matrix Gerschgorin circle based transmitting antenna number blind estimation method mainly comprises the steps of (1) constructing a received signal matrix of two adjacent sub-carriers; (2) calculating a covariance matrix; (3) constructing a unitary transformation matrix; (4) performing unitary similarity transformation; (5) constructing a judgment criterion expression; and (6) determining the number of the transmitting antennas. The matrix Gerschgorin circle based transmitting antenna number blind estimation method solves the problems of blind identification of the number of the transmitting antenna in the malicious conditions of the frequency selective fading channel, a low signal to noise ratio and residential frequency deviation.
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Description

technical field

[0001] The present invention relates to a method for estimating the number of transmitting antennas, in particular to a MIMO-OFDM (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing, Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) system under a frequency selective fading channel The method for estimating the number of transmitting antennas can be used for blind identification of communication signals and cognitive radio in the case of residual frequency offset, and belongs to the technical field of wireless communication. Background technique

[0002] The development goals of the new generation wireless communication system are higher transmission rate, better service quality, and higher spectrum utilization. However, in the mobile wireless communication system, there are problems of spectrum resource shortage and high-speed data transmission easily causing channel frequency selective fading, so MIMO-OFDM tec...

Claims

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