Wireless video communications over lossy channels

Topiwala, Pankaj; Dai, Wei; Bush, Kevin B.

doi:10.1117/12.2571310

Cited by 2 publications

(1 citation statement)

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“…Authors in [ 28 ] presented a protocol deploying turbo and systematic network coding for satellite video communication using high efficiency video coding (HEVC). Different combinations of source and channel codes are investigated in [ 29 ] to find the optimal strategies for video communication over the lossy channels. An interesting characterization approach was presented in [ 30 ] to investigate the energy requirement for the H.265 standard.…”

Section: Introductionmentioning

confidence: 99%

Averting BER Floor with Iterative Source and Channel Decoding for Layered Steered Space-Time Codes

Minallah

Ahmed

Frnda

et al. 2021

Sensors

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The widespread development in wireless technologies and the advancements in multimedia communication have brought about a positive impact on the performance of wireless transceivers. We investigate the performance of our three-stage turbo detected system using state-of-the-art high efficiency video coding (HEVC), also known as the H.265 video standard. The system makes use of sphere packing (SP) modulation with the combinational gain technique of layered steered space-time code (LSSTC). The proposed three-stage system is simulated for the correlated Rayleigh fading channel and the bit-error rate (BER) curve obtained after simulation is free of any floor formation. The system employs low complexity source-bit coding (SBC) for protecting the H.265 coded stream. An intermediate recursive unity-rate code (URC) with an infinite impulse response is employed as an inner precoder. More specifically, the URC assists in the prevention of the BER floor by distributing the information across the decoders. There is an observable gain in the BER and peak signal-to-noise ratio (PSNR) performances with the increasing value of minimum Hamming distance (dH,min) using the three-stage system. Convergence analysis of the proposed system is investigated through an extrinsic information transfer (EXIT) chart. Our proposed system demonstrates better performance of about 22 dB than the benchmarker utilizing LSSTC-SP for iterative source-channel detection, but without exploiting the optimized SBC schemes.

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Section: Introductionmentioning

confidence: 99%

Averting BER Floor with Iterative Source and Channel Decoding for Layered Steered Space-Time Codes

Minallah

Ahmed

Frnda

et al. 2021

Sensors

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Impact of Wireless Network Packet Loss on Real-Time Video Streaming Application: A Comparative Study of H.265 and H.266 Codecs

Abdullah,

Abdulrahman,

Mohammed

et al. 2024

KJAR

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The transmission of real-time videos over wireless networks is prone to the negative consequences of packet loss and delay, which can have a potential effect on the video quality during streaming. These impairments can lead to interruptions, buffering, and degradation of visual and auditory elements, resulting in an unsatisfactory user experience. In this paper, we aim to address the challenges associated with packet loss and delay parameters in wireless networks, and propose an approach to alleviate their impact on real-time video transmission. The proposed approach involves utilizing the H.265/H.266 video coding standards. For Versatile Video Coding (VVC), a patch support for VVdeC and VVenC to FFmpeg (Fast Forward Moving Picture Expert Group) is added. As a result, FFmpeg is used to encode, stream and decode all videos. Raw videos of 2K qualities are encoded based on the adaptive quantization (QP) for the above-mentioned codecs. By selecting optimal transmission data based on various network conditions, this approach enhances the Quality of Experience (QoE) for end-users while minimizing resource usage in the wireless network. Furthermore, the proposed approach selects the codec standards according to their bitrates and frame rates. Simulation results indicate that the proposed approach has a significant improvement for real-time video streaming over wireless networks to satisfy the end user experience. The approach also outperforms other related work by gaining a PSNR of +12 dB for H.265 and +13 dB for H.266 when the network packet loss is 1%.

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Wireless video communications over lossy channels

Cited by 2 publications

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Averting BER Floor with Iterative Source and Channel Decoding for Layered Steered Space-Time Codes

Averting BER Floor with Iterative Source and Channel Decoding for Layered Steered Space-Time Codes

Impact of Wireless Network Packet Loss on Real-Time Video Streaming Application: A Comparative Study of H.265 and H.266 Codecs

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