A method for eliminating non-orthogonal space-time block coding self-interference item based on matrix rotation

A space-time block code and non-orthogonal technology, applied in the field of space-time transmit diversity, can solve the problems of not being able to set self-interference items to zero and increasing system complexity
CN1545366AInactive Publication Date: 2004-11-10XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2004-11-10
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention is a matrix rotation based method for eliminating self-interference of a nonorthogonal space-time packet code, in view of the problem that there are self-interference items in the channel correlation matrix of nonorthogonal (or quasi-orthogonal) space-time packet code, adopting Givens rotation twice. Thus, one hand, it can effectively eliminate the self-interference items and rotates channel matrix into orthogonal matrix. During space-time transmit diversity, the maximum advantage caused by the channel matrix being an orthogonal matrix is that it can make linear decoding at receiving end, largely reducing decoding complexity. And at the same time it make the packet code corresponding to the channel matrix have an orthogonal structure, accordingly able to obtain maximum transmitting speed, partial diversity gain and receiving-end linear decoding.
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Description

technical field

[0001] The invention belongs to a space-time transmit diversity technology in a multi-antenna wireless communication system, in particular to a method for eliminating self-interference items of non-orthogonal space-time block codes based on matrix rotation. Background technique

[0002] Space-Time Coding is a new coding and signal processing technology in wireless communication. It uses multiple transmitting and receiving antennas to transmit information, which can greatly improve the information capacity of wireless communication systems. At present, research on space-time coding is mainly carried out around Space-Time Trellis Code (abbreviated as STTC) and Space-Time Block Code (abbreviated as STBC). Space-time trellis codes increase exponentially with the increase of transmission rate because of their decoding complexity [V.Tarokh, N.Seshadri, A.R.Calderbank, Space-time codes for high datarate wireless communication: Performance analysis and codeconstructi...

Claims

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