Rate-enhanced JTIDS waveform based on LDPC

WU Zhao; ZHANG Yu; SONG Jian

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Journal of Tsinghua University(Science and Technology) ›› 2015, Vol. 55 ›› Issue (5) : 520-525.

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Rate-enhanced JTIDS waveform based on LDPC

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Abstract

Joint tactical information distribution systems (JTIDS) have attracted much attention due to their anti-interference capabilities, security, long communication range, flexible deployment, etc. This paper describes a rate-enhanced JTIDS waveform based on the low density parity check code (LDPC). The optimized MSK soft demodulation method is combined with the LDPC code in the waveform to give significantly improved performance. Simulations demonstrate that the transmission rate of this waveform is an order of magnitude higher than the original JTIDS signal with only a slight decrease in the demodulation threshold and communication range. This scheme is better than several conventional rate-enhanced schemes and can be used in high data rate JTIDS terminals.

Key words

joint tactical information distribution system (JTIDS) / low density parity check code (LDPC) / high-data-rate transmission / soft demodulation

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WU Zhao, ZHANG Yu, SONG Jian. Rate-enhanced JTIDS waveform based on LDPC[J]. Journal of Tsinghua University(Science and Technology). 2015, 55(5): 520-525

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