Abstract
Delay-constrained streaming from a moving platform is of paramount importance for applications such as the remote control of drones, where a low-delay video stream is required in order to provide visual feedback to the pilot while providing high quality video at playback. In this letter we propose a scheme based on cross-packet coding for delay-constrained streaming over block fading channels with channel state information at the receiver only. The proposed scheme largely enhances upon a memoryless transmission approach in terms of average decoded rate and provides increased protection to packets transmitted earlier within a block, which is useful for successively compressed sources such as IPPPP video streams. The proposed scheme approaches the asymptotic upper bound over a wide range of SNR already for blocks with size of practical relevance and has a comparatively low complexity.
Highlights
Real-time streaming is of paramount importance in the context of the upcoming Tactile Internet [1]
We show that the performance in terms of frame error rate (FER) and average decoded rate (ADR) improves with the number
We evaluate the performance of the proposed approach in terms of ADR, message-FER and block-FER
Summary
Giuseppe Cocco was partly founded by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Individual Fellowship grant agreement No 751062. All such works focus on an HARQ scenario and assume feedback at each time slot Among these works, the ones using actual channel codes consider at most 3 messages per block. In this letter we propose a novel scheme based on crosspacket coding for delay-constrained streaming applications over block fading channels. Unlike in [10] we consider a block fading channel and propose an approach that can be implemented using different LDPC constructions, rather than focusing on a specific code design. This is the first time that such aspects are systematically studied in the context of cross-packet coding for streaming over block fading channel and that a coding and decoding scheme show the practicality of a joint encoding approach in such setup
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