Communications trade-offs for unattended ground sensors

Shou Y. Mui

doi:10.1117/12.280650

24 July 1997 Communications trade-offs for unattended ground sensors

Shou Y. Mui

Proceedings Volume 3081, Peace and Wartime Applications and Technical Issues for Unattended Ground Sensors; (1997) https://doi.org/10.1117/12.280650
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper examines a number of modulation, forward error- correction (FEC) coding, and synchronization techniques for use with unattended ground sensors. Included in the discussion are coherent and non-coherent modulation techniques, and block and convolutional codes. The synchronization requirements for coherent and non-coherent signaling are analyzed. it is shown that the estimation the signal phase for coherent demodulation does not increase length of the preamble used to aid synchronization. Hence, coherent modulation should be chosen over non-coherent signaling to improve the power efficiency. It is also shown that the use of FEC coding does not increase the required preamble energy. Thus, coding should be employed to achieve an improved bit error rate.

Citation Download Citation

Shou Y. Mui "Communications trade-offs for unattended ground sensors", Proc. SPIE 3081, Peace and Wartime Applications and Technical Issues for Unattended Ground Sensors, (24 July 1997); https://doi.org/10.1117/12.280650

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