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Space-time block code-differential chaotic keying method for video transmission for scalable video codecs

A technology of differential chaotic keying and space-time block code, which is applied in the field of video transmission and can solve problems such as increasing the complexity of the optimal detection algorithm

Active Publication Date: 2017-07-28
HARBIN INST OF TECH
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Problems solved by technology

As we all know, the introduction of STBC significantly increases the complexity of the optimal detection algorithm at the receiving end

Method used

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  • Space-time block code-differential chaotic keying method for video transmission for scalable video codecs
  • Space-time block code-differential chaotic keying method for video transmission for scalable video codecs
  • Space-time block code-differential chaotic keying method for video transmission for scalable video codecs

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specific Embodiment approach 1

[0051] Specific implementation mode 1. Combination figure 1 Describe this specific embodiment, the video transmission method of space-time block code-differential chaotic keying for scalable video codec,

[0052] A. the sender

[0053] let b i ∈{1,-1} denotes the ith binary information bit, R i =[x i (1),x i (2),…,x i (β)] and D i =b i R i , where β is the length of the chaotic reference signal part, which is also half the length of the spreading factor.

[0054] First, the data streams to be sent are grouped, and each group has 8 bits of information. Then, each information bit is DCSK modulated and distributed to the STBC encoder. Finally, the information is mapped to different antennas for transmission. The system block diagram of STBC-DCSK algorithm is as follows figure 1 shown.

[0055] Since different transmitting antennas have different channel fading conditions, it is considered that after any one bit of information is modulated by DCSK, there are two parts...

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Abstract

The invention discloses a space time block code-differential chaos shift keying video transmission method for a scalable video coding and decoding device and relates to a video transmission method. The space time block code-differential chaos shift keying video transmission method for the scalable video coding and decoding device is aimed to improve the average PSNR value of the video transmission and the visual quality of the video transmission. The space time block code-differential chaos shift keying video transmission method for the scalable video coding and decoding device provides the STBC-DCSK structure with low receiving end detection complexity for the SVC video transmission. The sending end uses four sending antennas, and each two sending antennas form one group. The space time block code-differential chaos shift keying video transmission method for the scalable video coding and decoding device mainly designs a novel STBC-DCSK code word structure, the bit error rate performance can be effectively improved by means of the transmission structure, and meanwhile, the novel STBC-DCSK code word structure is suitable for the SVC video transmission.

Description

technical field [0001] The present invention relates to a video transmission method. Background technique [0002] Space Time Block Code (STBC) is a popular alternative for wireless transmission standards, mainly because STBC can effectively improve the quality of the signal at the receiving end. As we all know, the introduction of STBC significantly increases the complexity of the optimal detection algorithm at the receiving end. Therefore, it is very important to propose an STBC design that can achieve full diversity and low detection complexity, and many scholars are struggling for it. [0003] Differential Chaos Keying (DCSK) has been intensively studied as a digital chaotic communication technology because it does not require channel state information and the receiving device is simple, and can well overcome the influence of fading channels. Recently, many scholars not only study the application of DCSK in SISO system, but also study the problem in MIMO system. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/33H04N19/36
Inventor 赵雅琴李书营任广辉吴芝路何亮
Owner HARBIN INST OF TECH
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