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Space-time coding for communication systems

A space-time block code and transmission channel technology, applied in the direction of coding, transmission system, coding components, etc., can solve the problems of increased decoding complexity, inability to achieve complete diversity, poor performance, etc., and achieve the effect of low decoding complexity

Active Publication Date: 2018-04-20
INST MINES TELECOM
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, the decoding complexity is increased to improve the symbol rate
However, these codes cannot achieve full diversity and suffer from poor performance at high SNR

Method used

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  • Space-time coding for communication systems

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Embodiment Construction

[0054] Embodiments of the present invention provide for generating a space-time block code (STBC) for encoding a data sequence to be transmitted over a transmission channel in a communication system, depending on the desired maximum likelihood (ML) decoding complexity and target performance. ) systems and methods.

[0055] Specifically, a linear STBC can be generated to encode a data sequence comprising k complex information symbols to be transmitted over a transmission channel. The k complex information symbols are represented by a complex-valued symbol vector s, where s=[s 1 ,...s k ] t , where s j Represents one of k symbols (1≤j≤k). A t Represents the transpose of matrix A, where A represents the given matrix.

[0056] space-time block code by n t ×T transfer matrix Definition, where T represents the number of slots used to transmit one block of encoded symbols (the length of STBC), and n t Indicates the number of transmit antennas. Each entry x of the transfer ...

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Abstract

The invention relates to space-time coding for communication systems. There is provided a method of generating a space-time block code (STBC) for encoding a digital data sequence comprising a set of independent symbols to be transmitted through a transmission channel in a communication system, the space-time block code being represented by a set of linear dispersion matrices in a linear dispersionrepresentation, each linear dispersion matrix comprising components having complex values, the method comprising, generating at least some of the linear dispersion matrices depending on component-wise conditions related to a set of selected pairs of the linear dispersion matrices, each pair comprising a first linear dispersion matrix and a second linear dispersion matrix, said component-wise conditions comprising a component-wise condition between the components of the first linear dispersion matrix and the components of the second linear dispersion matrix.

Description

Background technique [0001] The present invention relates generally to digital communications, and in particular to methods, systems and computer program products for generating linear space-time block codes (STBC). [0002] Driven by the development of digital technology and the emergence of new multimedia applications, different wireless communication systems have been developed, such as cellular networks and wireless ad hoc networks using single or multiple antennas to accommodate single or multiple transmitters / receivers . [0003] In wireless communication systems, the transmission of digital streams over physical channels can be disturbed by undesired channel effects (eg, multipath reflections and propagation attenuation), resulting in signal distortion. Diversity schemes are often used to address this fading effect while improving system performance. In particular, transmit diversity increases the likelihood that a receiving station can receive data transmitted by a t...

Claims

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Application Information

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IPC IPC(8): H04L1/06
CPCH04L1/0625H04L1/0643H04L1/0668H03M13/616H04B7/046H04B7/0615H04B7/0842H04L1/0041H04L1/0058
Inventor G·雷卡亚本-奥斯曼A·梅伊里M-A·柯斯巴
Owner INST MINES TELECOM
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