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Frequency offset inhibition method based on SCM-SM system

A technology of SCM-SM and frequency offset suppression, applied in the field of MIMO technology, can solve problems such as attenuation of received signal amplitude, system performance degradation, and destruction of inter-carrier interference between sub-carriers

Inactive Publication Date: 2017-02-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Frequency offset will not only cause amplitude attenuation and phase rotation of the received signal, but also destroy the orthogonality between sub-carriers and generate inter-carrier interference, resulting in system performance degradation

Method used

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  • Frequency offset inhibition method based on SCM-SM system
  • Frequency offset inhibition method based on SCM-SM system
  • Frequency offset inhibition method based on SCM-SM system

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions are omitted here.

[0044] In order to better describe the present invention, the terms used in the technical solution of the present invention and the transmitter structure of the overlapping code modulation-spatial modulation (SCM-SM) system are introduced first.

[0045] SCM-SM: as figure 1 , the initial data is divided into antenna information and bit data information after serial-to-parallel conversion. First, the data information is subjected to SCM modulation, that is, th...

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Abstract

The invention belongs to the technical field anti-interference of communication, relates to Spatial Modulation (SM), Interleave-division Multiple Access (IDMA), Superposition Coded Modulation (SCM) and Sphere Decoding, and related Multiple Input Multiple Output (MIMO) technologies, and provides a frequency offset inhibition method based on an SCM-SM system. A reception signal is compensated by compensating an optimal compensation value, an index of an emission antenna is estimated roughly via IMRC to compensate the signal accurately, the index of the emission antenna is estimated accurately after spherical decoding to update the frequency offset value, and the BER performance of the system is improved substantially.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, and relates to spatial modulation (Spatial Modulation, SM) technology, interleave-division multiple access (Interleave-division Multiple Access, IDMA) technology, superposition code modulation (Superposition Coded Modulation, SCM), spherical decoding ( Sphere Decoding, SD) technology, and its related MIMO (Multiple Input Multiple Output, MIMO) technology. Background technique [0002] MIMO modulation technology is a high-speed transmission technology in a wireless environment. It configures more antenna units at the transmitting end and / or receiving end, and combines advanced space-time coding modulation schemes. By making full use of the degree of freedom of space, it can Brings additional diversity, multiplexing and beamforming gains. [0003] Recently, SM technology has been proposed as a new modulation technique as a new MIMO modulation scheme. The basic principle of this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04L25/03H04L1/00
CPCH04L27/0014H04L1/005H04L1/0071H04L25/03242H04L2027/0026
Inventor 朱媛媛赵岩肖悦李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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