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Error Correction in High Frequency Automatic Link Establishment Radios With and Without Link Protection

Download Now Date Added: Jan 2011
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Error correcting techniques used by High Frequency Automatic Link Establishment (HF ALE) radios, including those with link protection, transform a basic 24-bit ALE word into 147 bits to be transmitted and received. This paper examines the effect random errors in the 147 received bits have on the received 24-bit ALE word. High Frequency Automatic Link Establishment (HF ALE) radios conforming to MIL-STD-188-141A utilize error correcting code, interleaving, and redundancy to reduce errors in the received data.