10 August 2004 An error-resilient approach for real-time packet communications by HF-channel diversity
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Abstract
This paper evaluates the performance of a high frequency (HF) wireless network for transporting packet multimedia services. Beyond of allowing civil/amateur communications, HF bands are also used for long distance wireless military communications. Therefore, our work is based on NATO Link and Physical layer standards, STANAG 5066 and STANAG 4539 respectively. At each HF channel, a typical transmission bandwidth is about 3 kHz with the resulting throughput bit rate up to 12800 bps. This very low bit rate by itself imposes serious challenges for reliable and low delay real time multimedia communications. Thus, this paper discusses the performance of a real time communication system designed to allow an end-to-end communication through “best effort” networks. With HF channel diversity, the packet loss percentage, on average considering three channel conditions, is decreased by 16% in the channel SNR range from 0 to 45 dB.
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Antonio Navarro, Rui Rodrigues, Joao Angeja, Joao Tavares, Luis Carvalho, Fernando Perdigao, "An error-resilient approach for real-time packet communications by HF-channel diversity", Proc. SPIE 5440, Digital Wireless Communications VI, (10 August 2004); doi: 10.1117/12.542586; https://doi.org/10.1117/12.542586
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