Introduction to Multi Attribute Decision Making-Based Application Layer Joint Coding for Image Transmission over Deep Space Channels

Abstract

The paper presents an introductive work concerning the joint application layer coding for image transmission over deep space channels. In more detail, both image compression, based on well-known algorithms (JPEG2000 and CCSDS), and encoding techniques (based on LDPC codes) to protect the sent images are simultaneously applied by the proposed joint application layer coding mechanism. It acts dynamically on the bases of the deep space channel conditions, in terms of Bit Error Rate, and it is based on the Multi-Attribute Decision Making theory. In practice, the proposal is aimed at protecting the essential informative contents of images sent through a deep space network. An introductive performance investigation of the proposal, obtained by implementing the proposed application layer joint coding scheme, is provided. The shown results are satisfactory and open the door to further developments of the proposed idea in real systems.

Tensor-Based Channel Estimation Approach for One-Way Multi-Hop Relaying Communications

“…Then let them equal to 0, i.e., Substitute (4)(5)(6)(7)(8)(9)(10)(11)(12) and (4)(5)(6)(7)(8)(9)(10)(11)(12)(13) into the sum-power constraint (4-6), we have . And this capacity is achieved when the coefficients are chosen according to (4)(5)(6)(7)(8)(9)(10)(11)(12) and (4-13).…”

“…There are some specific challenges that would not encounter in the wireless communications on the earth, such as the long distance transmission resulting into great loss combined with the limited power on the space craft [3][4][5][6]. To solve the problems, lots of ways are considered in deep space communication, such as image compression and channel coding as well as application layer coding mechanism are simultaneously applied for image transmission over deep space channels [7,8]. At present, single link is always adopted to transmit information between the space craft and the earth, however, it is not an efficient way for the case of the long distance transmission and power limit [1].…”