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<p>Link-16 is the designation of a tactical data link that is being introduced into operations of the United States Navy,  the Joint Services, and forces of the North Atlantic Treaty Organization (NATO). Link-16 does not significantly  change the basic concepts of tactical data link information exchange, but rather provides certain technical and  operational improvements to existing tactical data link capabilities. The communication terminal of Link-16 is  called the Joint Tactical Information Distribution System (JTIDS) and features Reed-Solomon (RS) coding,  symbol interleaving, cyclic code-shift keying (CCSK) for M-ary symbol modulation, minimum-shift keying  (MSK) for chip modulation and combined frequency-hopping (FH) and direct sequence spread spectrum (DSSS)  for transmission security. In this thesis, we investigate the performance of a Link-16/JTIDS-type waveform in both  additive white Gaussian noise (AWGN) and pulsed-noise interference (PNI) when an alternative error correction  coding scheme for the physical layer waveform is employed. The performance obtained using the alternative error  correction coding scheme is compared to that of the existing JTIDS waveform when the same assumptions have  been made for both waveforms. Based on the analyses, we conclude that the proposed alternative Link-16/JTIDS  communication scheme performs better than the existing Link-16/JTIDS waveform in both AWGN and PNI for  both coherent and noncoherent demodulation in terms of both required signal power and throughput.
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<br>Subjects: Reed-Solomon codes; Signal processing; Digital techniques; Mathematics; Error-correcting codes (Information theory); Random noise theory</div>
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Koromilas, Ioannis</div>
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