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The Joint Tactical Information Distribution System (JTIDS) is the communication terminal of Link-16. When the double-pulse structure is chosen to transmit the Link-16 data, JTIDS is a hybrid direct sequence/fast frequency-hopping spread spectrum system with a sequential diversity of two. To minimize the effect of Pulsed-Noise Interference (PNI), a noise-normalized diversity combining MSK chip demodulator is assumed in the JTIDS receiver. The Symbol Error Rate (SER) performance of a coherently detected JTIDS-type waveform for the double-pulse structure with Noise-Normalization Combining (NNC) in PNI is investigated in this paper. To facilitate the evaluation, perfect frequency de-hopping, sequence synchronization, chip synchronization, and 32-chip sequence descrambling are assumed.
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