MIMO detecting preprocessing device and method

A preprocessing device and preprocessing technology, applied in the directions of space transmit diversity, baseband system components, diversity/multi-antenna systems, etc., can solve the problem of increasing implementation complexity, unfavorable hardware implementation of Gram-Schmidt, and reducing BER of MIMO detection, etc. question

Active Publication Date: 2014-01-15
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, this method is not conducive to the implementation of hardware based on Gram-Schmidt, which will increase the complexity of the implementation, and the QR decomposition does not consider the impact of additive noise, which will reduce the BER (Bit Error Rate, bit error rate) performance of MIMO detection

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  • MIMO detecting preprocessing device and method
  • MIMO detecting preprocessing device and method

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[0052] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0053] figure 1 It is a system architecture diagram of a MIMO detection preprocessing device according to the present invention. Such as figure 1 As shown, a MIMO detection preprocessing device of the present invention is based on the MMSE-SQRD algorithm and includes: a channel transfer matrix H input buffer module 20, an MMSE-SQRD preprocessing core module 21, an upper triangular matrix R...

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Abstract

The invention discloses an MIMO detecting preprocessing device and method. The device comprises a channel transfer matrix input cache module, an MMSE-SQRD preprocessing core module, an upper triangular matrix R cache module, a sorting information cache module, a unitary matrix Q cache module, a product computing module and a product computing result cache module. According to the MIMO detecting preprocessing device and method, QR decomposition of an augmented matrix of a channel transfer matrix received by an MIMO receiving end is achieved, sorting operation is added in the matrix QR decomposition process, a unitary matrix and an upper triangular matrix after QR decomposition are obtained, the sorting information vectors of the matrixes are obtained, the device and method are suitable for fields such as MIMO detecting, and the obtained unitary matrix and the obtained upper triangular matrix after QR decomposition can be effectively reused in next-level MMSE and K-Best detecting.

Description

technical field [0001] The present invention relates to the field of MIMO wireless communication, in particular to a MIMO detection preprocessing device and method based on MMSE-SQRD (Minimum Mean Square Error-Sorted QR Decomposition, Minimum Mean Square Error-Sorted QR Decomposition) algorithm. Background technique [0002] Wireless communication is one of the most active research fields in the world today. It breaks through the physical limitations of wired communication, allowing users to communicate freely wherever radio waves can reach, which greatly expands the space and vitality of communication. MIMO (Multiple-Input Multiple-Output) technology is considered to be one of the key technologies in the next generation of high-speed wireless communication. [0003] Consider a simple model of a MIMO wireless communication device with M transmit antennas and N receive antennas. The source data is encoded, modulated, and space-time transformed at the transmitting end to the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/08
Inventor 黎成任一帆贺光辉
Owner SHANGHAI JIAO TONG UNIV
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