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Scalable video transmission method for wideband long term evolution-advanced (LTE-A) system

A video and new transmission technology, applied in the field of video transmission based on scalable wavelet, can solve the problem of not being able to obtain complete CSI, achieve multi-system error recovery, reduce feedback bandwidth and delay, and achieve the effect of robust transmission

Active Publication Date: 2011-09-21
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, complete CSI is not available at the transmitter side, and the delay of feedback CSI is unavoidable

Method used

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  • Scalable video transmission method for wideband long term evolution-advanced (LTE-A) system
  • Scalable video transmission method for wideband long term evolution-advanced (LTE-A) system
  • Scalable video transmission method for wideband long term evolution-advanced (LTE-A) system

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Embodiment Construction

[0046] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In this exemplary embodiment, a MIMO OFDM system is taken as an example. But those skilled in the art should understand that the scope of the present invention is not limited thereto. The schemes of examples all fall within the protection scope of the present invention.

[0047] A wireless MIMO OFDM system for scalable video transmission according to an exemplary embodiment of the present invention is described below. see figure 2 , figure 2 The processes performed on video streams at the transmitting side and the receiving side in the wireless MIMO OFDM system are shown respectively.

[0048] image 3 A transmitter 300 for video bitstream optimized transmission according to an exemplary embodiment of the present invention is shown. The transmitter 300 includes: a source encoder 301 , a channel encoder 303 , an antenna selector 305 and an optimizatio...

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Abstract

The invention discloses a scalable video transmission method for a wideband long term evolution-advanced (LTE-A) system, which is used for the optimized transmission of a video bit stream. The method comprises the following steps of: performing source coding on the input video bit stream, thereby making the video bit stream form a plurality of hierarchical video bit streams which can be independently decoded; performing channel coding on the plurality of hierarchical video bit streams to form a plurality of code words in an unequal error protection (UEP) structure; performing antenna selection according to a part of channel state information (CSI) fed back to a transmitter by a receiver to allocate corresponding transmission antennae to the plurality of hierarchical video bit streams; and obtaining an optimal power allocation vector and an optimal rate allocation vector by minimizing the overall expected distortion of the hierarchical video bit streams under the conditions of given overall transmission rate and given overall transmission power. The invention also discloses the transmitter used for the optimized transmission of the video bit stream.

Description

technical field [0001] The present invention relates to scalable video transmission over wireless systems, and more particularly to scalable wavelet-based video transmission over Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM). Background technique [0002] The third generation (3G) and above mobile communication systems including 3GPP LTE, LTE-A and WIMAX wireless technologies enable multimedia transmission over wireless channels. The IP-based architecture for 3G wireless systems allows next-generation wireless services such as voice, high-speed data, Internet access, and audio and video streaming over all IP networks. Wireless video has high requirements on bandwidth, delay and loss. However, many existing mobile networks cannot provide guaranteed quality of service due to the unavoidable temporarily high bit error rate (BER) during fading periods. [0003] Currently, compressed video data is a major source of Internet traffic. In...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/00H04L27/26H04N7/26H04N19/184
CPCY02D30/70
Inventor 赵生捷尤明礼
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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