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Joint detection decoding method for MIMO system through combination of polarization code

A technology of joint detection and polar code, which is applied in the field of low-complexity joint detection and decoding of MIMO systems, can solve problems such as increasing system delay, reduce complexity, avoid extension and update, and improve system capacity and data rate Effect

Inactive Publication Date: 2016-11-16
SOUTHEAST UNIV
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Problems solved by technology

However, iterative detection and decoding will increase system latency

Method used

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  • Joint detection decoding method for MIMO system through combination of polarization code
  • Joint detection decoding method for MIMO system through combination of polarization code
  • Joint detection decoding method for MIMO system through combination of polarization code

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Embodiment Construction

[0027]Below in conjunction with specific implementation case, further illustrate the present invention, it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after reading the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0028] In order to better understand the present invention, firstly, each method involved in the present invention is briefly introduced.

[0029] In MIMO system preprocessing, sorted QR decomposition (SQRD) of the channel matrix. Signals with the highest signal-to-noise ratio (SNR) are detected first, and signals with the lowest SNR are detected last, thereby reducing error propagation. Through SQRD processing, the maximum likelihood detection problem of MIMO systems can be transformed in...

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Abstract

The invention discloses a joint detection decoding method for an MIMO system through combination of a polarization code. The method comprises the steps of 1), initializing a path list and a PED list of the path list; 2), establishing a reduction tree T; 3), carrying out path expansion layer by layer, and updating the path list and the PED list; and 5), carrying out hard input or soft input decoding after path expansion of all layers is finished. According to the method, through combination of the coding characteristic of the polarization code, ineffective path expansion and update can be avoided, the integrated calculation complexity is reduced, and moreover, the BER performance of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a low-complexity joint detection and decoding method applied to a MIMO system encoded with polar codes. Background technique [0002] Mobile communication has experienced the development of the first generation of analog communication (1G), the second generation of cellular digital communication (2G), and the third generation of CDMA broadband communication (3G), and has now entered the industrialization of the fourth generation of mobile communication (4G) application stage. Mobile communication is developing towards high speed, high capacity, high spectral efficiency and low power consumption, and continuously meets people's growing data and video needs. According to predictions from major operators and authoritative consulting agencies: mobile broadband service traffic will increase 1,000 times in the next 10 years. The existing 4G technology still cannot meet f...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L25/03
CPCH03M13/13H04L1/0048H04L1/0054H04L25/03331
Inventor 张川杨俊梅宋文清尤肖虎
Owner SOUTHEAST UNIV
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