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Related Experiment Video

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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

Nasru Minallah¹, Ishtiaque Ahmed², Jaroslav Frnda³

¹Department of Computer Systems Engineering, University of Engineering and Technology Peshawar, Peshawar 25000, Pakistan.

Sensors (Basel, Switzerland)

|October 13, 2021

Summary

This study introduces a three-stage turbo detected system for high efficiency video coding (HEVC/H.265) that achieves superior bit-error rate (BER) performance without floor formation, enhancing wireless transceiver capabilities.

Keywords:

BER floor EXIT analysis antenna arrays high efficiency video coding iterative decoding layered steered space-time codes

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Area of Science:

Wireless communication
Multimedia systems
Information theory

Background:

Advancements in wireless technologies and multimedia communication enhance transceiver performance.
High Efficiency Video Coding (HEVC/H.265) is a state-of-the-art video compression standard.
Sphere Packing (SP) modulation and Layered Steered Space-Time Code (LSSTC) are advanced techniques.

Purpose of the Study:

To investigate the performance of a novel three-stage turbo detected system for HEVC/H.265.
To evaluate the system's bit-error rate (BER) and peak signal-to-noise ratio (PSNR) under correlated Rayleigh fading channels.
To analyze the system's convergence behavior using Extrinsic Information Transfer (EXIT) charts.

Main Methods:

Simulation of a three-stage turbo detected system employing Sphere Packing (SP) modulation and Layered Steered Space-Time Code (LSSTC).
Utilization of low complexity Source-Bit Coding (SBC) for H.265 stream protection.
Incorporation of an intermediate recursive Unity-Rate Code (URC) as an inner precoder to prevent BER floor.
Analysis of BER, PSNR, and convergence using EXIT charts.

Main Results:

The proposed system achieved a BER curve free of floor formation in correlated Rayleigh fading channels.
An observable gain in BER and PSNR was noted with increasing minimum Hamming distance (dH,min).
The system demonstrated a performance improvement of approximately 22 dB compared to a benchmark system using LSSTC-SP for iterative source-channel detection.

Conclusions:

The three-stage turbo detected system offers significant performance gains for HEVC/H.265 transmission.
The URC effectively prevents BER floor by distributing information across decoders.
The system shows promise for enhanced wireless multimedia communication, outperforming existing methods without optimized SBC.