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Space time block code-differential chaos shift keying video transmission method for scalable video coding and decoding device

A codec, space-time block code technology, applied in the field of video transmission, can solve problems such as increasing the complexity of the optimal detection algorithm

Active Publication Date: 2015-03-04
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 chaos shift keying video transmission method for scalable video coding and decoding device
  • Space time block code-differential chaos shift keying video transmission method for scalable video coding and decoding device
  • Space time block code-differential chaos shift keying video transmission method for scalable video coding and decoding device

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specific Embodiment approach 1

[0050] Specific implementation mode 1. Combination figure 1 Describe this specific embodiment, the video transmission method that is used for the space-time block code of scalable video codec-differential chaos detection and control,

[0051] A. Sending end

[0052] order b i ∈{1,-1} represents the i-th 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.

[0053] First, the data stream to be sent is 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 the STBC-DCSK algorithm is as follows figure 1 shown.

[0054] Since different transmitting antennas have different channel fading conditions, considering that any bit of information undergoes DCSK...

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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 invention relates to a video transmission method. Background technique [0002] Space-time block code (STBC) is a popular alternative to 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 striving for this. [0003] Differential Chaos Detection and Control (DCSK) has been deeply studied as a digital chaos communication technology because it does not require channel state information and the receiving device is simple, and it 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 problems in MIMO system. ...

Claims

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Application Information

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Patent Type & Authority Applications(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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