Method and device for decoding a data signal

A signal and decoder technology, applied in the field of decoding data signals, can solve problems such as computational complexity affecting processing complexity, inapplicability of sub-block decoding algorithms, etc., and achieve the effects of reducing computational complexity, parallelization, and decoding errors.

CN107276716BActive Publication Date: 2020-08-18INST MINES TELECOM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-08-18

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Abstract

An embodiment of the present invention provides a decoder for decoding a signal received through a transmission channel in a communication system, the signal comprising a vector of information symbols, the transmission channel represented by a channel matrix comprising column vectors, the The information symbols carry information bits, wherein the decoder comprises: a transformation unit (401) configured to determine a set of auxiliary channel matrices, each auxiliary channel matrix by performing at least one of the column vectors of the channel matrix A linear combination of column vectors is determined; a decomposition unit (407), which is configured to determine that each auxiliary channel matrix is ​​decomposed into an upper triangular matrix and an orthogonal matrix; a matrix selection unit (409), which is configured to At least one auxiliary channel matrix in the group of auxiliary channel matrices is selected according to the selection criteria related to the components of the above triangular matrix. The decoder is configured to determine the auxiliary signal by multiplying the received signal by the transpose of an orthogonal matrix corresponding to the selected auxiliary channel matrix, the decoder is configured to apply a decoding algorithm according to the Auxiliary signals and determining at least one estimate of said vector of information symbols from an upper triangular matrix corresponding to said selected auxiliary channel matrix.
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Description

technical field

[0001] The present invention relates generally to digital communications, and more particularly to methods and apparatus for decoding data signals. Background technique

[0002] Multipath propagation is the propagation phenomenon in which a signal takes two or more paths to reach a receiver device or device. Multipath propagation can also lead to interference between different signals traveling through the same communication medium or between different components of the same signal. This phenomenon can occur eg in wired communication links due to signal reflections eg caused by impedance mismatches. In digital radio communications, multipath propagation can occur due to signal reflections from the atmosphere and terrestrial objects. In optical communication systems, dispersion and multiple reflections in the fiber propagation environment may cause multipath propagation.

[0003] Destructive interference caused by multipath propagation, mainly inter-symbol ...

Examples

Embodiment Construction

[0071] Embodiments of the present invention provide, alone or in combination, methods, devices and computer program products for decoding vectors of information symbols received over a transmission channel in a communication system with optimized computational complexity. A transmission channel is represented by a channel matrix comprising column vectors. Embodiments of the invention are based on transforming the channel matrix into a matrix according to a selection criterion, enabling a reduction in the complexity of the decoding algorithm implemented to determine at least one estimate of the information symbol vector.

[0072] Methods, devices and computer program products according to various embodiments of the present invention may be implemented in different types of systems. In particular, methods, devices and computer program products according to various embodiments of the present invention may be implemented in a communication system to determine estimates of informat...