Performance analysis of an alternative link-16/JTIDS waveform transmitted over a channel with pulse-noise interference
Cham, Kok Kiang
Robertson, R. Clark
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The Joint Tactical Information Distribution System (JTIDS) is a hybrid frequency-hopped, direct sequence spread spectrum system that utilizes a (31,15) Reed-Solomon (RS) code and cyclical code-shift keying modulation for the data packets, where each encoded symbol consists of five bits. The primary drawback to JTIDS is the limited data rate. In this thesis, an alternative waveform consistent with the existing JTIDS channel waveform but with a two-fold increase in data rate is analyzed. The system to be considered uses (31,15) RS encoding as in the original JTIDS, but each pair of five-bit symbols at the output of the Reed-Solomon encoder undergo serial-to-parallel conversion to two five-bit symbols, which are then independently transmitted on the in-phase and quadrature components of the carrier using 32-ary biorthogonal keying with a diversity of two. The performance obtained with the alternative waveform is compared with that obtained for the existing JTIDS waveform for the relatively benign case where additive white Gaussian noise is the only noise present as well as when pulse-noise interference (PNI) is present. Errors-and-erasures decoding as well as errors-only decoding is considered. Based on the analyses, we see that the proposed alternative JITDS/Link-16 waveform performs better in AWGN as well as when PNI is present. No significant advantage is obtained using EED for the alternative waveform. There is a significant improvement in performance when perfect-side information is assumed.
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Performance analysis of a JTIDS/link-16-type waveform using 32-ary orthogonal signaling with 32 chip baseband waveforms and a concatenated code Aivaliotis, Theodoros. (Monterey, California: Naval Postgraduate School, 2009-12);The Joint Tactical Information Distribution System (JTIDS)) is a hybrid frequency-hopped, direct sequence spread spectrum system which used cyclic code-shift keying (CCFK) for M-ary symbol modulation and minimum shift-keying ...
Performance analysis of a Link-16/JTIDS compatible waveform transmitted over a channel with pulse-noise interference Lekkakos, Dimitrios. (Monterey, California. Naval Postgraduate School, 2008-09);The Joint Tactical Information Distribution System (JTIDS) is a hybrid frequency-hopped, direct sequence spread spectrum system that utilizes a (31, 15) Reed-Solomon (RS) code and cyclical code-shift keying (CCSK) modulation ...
Performance analysis of a Link-16 compatible waveform using errors-and-erasures decoding when corrupted by pulse-noise interference Lekkakos, Dimitrios; Kragh, Frank; Robertson, Clark (IEEE, 2009);The Link-16 is the tactical data link utilized by the Joint Tactical Information Distribution System (JTIDS). The JTIDS system is important due to its wide use by U.S. armed forces, NATO, and other allied militaries. Link-16 ...