Abstract
The paper deals with strategies for optimizing the transmission of JPEG2000 coded images over a MIMO quasi-static Rayleigh fading channel, by exploiting different available MIMO STBC (Space Time Block Codes), as well as the image content to be transmitted. The aim is to propose a link adaptation scheme based on the variable radio channel’s conditions, by establishing an UEP (Unequal Error Protection) scheme that leads to the best tradeoff between the robustness to errors and the image visual quality. Comparisons are made with the EEP (Equal Error Protection) case, in terms of the PSNR (Peak Signal to Noise Ratio) fidelity metric, as well as the subjective image quality.
Highlights
Nowadays, multimedia wireless applications have become very popular mainly due to the advances of wireless technologies that are able to offer high data rates to both stationary and mobile users
The paper deals with strategies for optimizing the transmission of JPEG2000 coded images over a MIMO quasi-static Rayleigh fading channel, by exploiting different available MIMO STBC (Space Time Block Codes), as well as the image content to be transmitted
The paper aims at showing the importance and the gain that can be obtained by exploiting the content to be transmitted in a MIMO OL system
Summary
Multimedia wireless applications have become very popular mainly due to the advances of wireless technologies that are able to offer high data rates to both stationary and mobile users. The main novelty of this paper consists in showing the importance and the gain that results both from the ex ploitation of the content to be transmitted in a MIMO-OL system as well as the error performance of different available STBC (Space Time Block Coding) techniques. As in [5] and [6], adaptive UEP schemes are proposed on Rayleigh fading channels by exploiting the hierarchical structure of the JPEG2000 bit stream In all these cases, the possible benefits that may result from applying an efficient MIMO transmission scheme are not taken into account. Often it is impossible to take a real time adaptation decision All of these factors impose a closer look to the benefits of open loop MIMO communications to systems that feature unequal error protection.
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