A Joint Source-Channel Error Protection Transmission Scheme Based on Compressed Sensing for Space Image Transmission

2018 ◽  
pp. 455-462
Author(s):  
Dongqing Li ◽  
Junxin Luo ◽  
Tiantian Zhang ◽  
Shaohua Wu ◽  
Qinyu Zhang
Keyword(s):  
Compressed Sensing ◽  
Image Transmission ◽  
Error Protection ◽  
Transmission Scheme ◽  
Channel Error ◽  
Space Image

scholarly journals Joint source–channel rate allocation with unequal error protection for space image transmission

2017 ◽  
Vol 13 (7) ◽  
pp. 155014771772114 ◽  
Author(s):  
Dan Dong ◽  
Shaohua Wu ◽  
Dongqing Li ◽  
Jian Jiao ◽  
Chanjuan Ding ◽  
...  
Keyword(s):  
Channel Coding ◽  
Source Coding ◽  
Transmission Rate ◽  
Image Transmission ◽  
Rate Allocation ◽  
Unequal Error Protection ◽  
Transmission Performance ◽  
Error Protection ◽  
Joint Design ◽  
Space Image

High reliable and efficient image transmission is of primary importance for space communications. In the traditional space image transmission system design, the source coding module and channel coding module are separated. This separate design, although simple to be implemented, cannot explore the transmission performance to the most. In this article, we propose a joint source–channel rate allocation framework to improve the space image transmission performance. A joint rate allocation algorithm based on the packet loss rate is proposed. For certain required system transmission rate, the optimal source coding and channel coding rate pair can be selected from pre-configured code rate sets by sliding search. In addition, our design has taken into account the progressive scalability feature of the image compression results. Each of the source coding output packets is divided into several sub-packets with different levels of significance and then channel coding with different rates is applied on these sub-packets to achieve unequal error protection. Simulation results show that the proposed joint design can significantly improve the image reconstruction quality. Compared with the traditional separate design, the proposed joint design can achieve 3–5 dB performance gain in terms of peak signal-to-noise ratio.

STBC-Assisted MDC-NOMA Image Transmission Scheme for Multi-Antenna Systems

2022 ◽  
pp. 1-12
Author(s):  
Suyue Li ◽  
Fanyi Meng ◽  
Jian Xiong ◽  
Lina Bariah ◽  
Sami Muhaidat ◽  
...  
Keyword(s):  
Image Transmission ◽  
Transmission Scheme ◽  
Antenna Systems
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