Asynchronous spread spectrum communication paradigm for use in low-power applications: Description and simulation results

E. Brian Welch, David R. Holmes III, Jonathan D. Coker, Timothy M. Schaefer, Barry Kent Gilbert, Erik S. Daniel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Contemporary wireless communication strategies focus on efficient use of bandwidth in order to allow more users to exploit the RF spectrum through techniques like Frequency-hopping spread spectrum (SS) and Direct-sequence SS. In many real-world applications, these methods are implemented for synchronous communication systems. To achieve synchronous communication, two-way handshaking that requires overhead circuitry is performed between the sender and receiver. In order to use spread spectrum methods for certain unconstrained and low-power applications, such as implantable and remote monitoring devices, it is necessary to refine these methods to support asynchronous communication. We have designed and modeled a SS system, which could be integrated with a custom integrated circuit that would provide elementary multi-user communication. The SS logic generates a gold-code based on address and data bits that is then modulated with a carrier to transmit the information. Because the system is asynchronous, we treat each transmitted code as an independent piece of information. The receiver decodes the information using a full correlation with the ideal known gold-codes. For efficiency purposes, the filter is applied in the frequency domain. A threshold is applied to the output of the filter to determine if a particular code is transmitted as well as the point in time/space from which the signal was sent. The method was simulated and evaluated under several scenarios including different carrier frequencies, multiple targets, and various positions relative to the receiver from the simulated receiver. The results demonstrate the utility of asynchronous SS under many different conditions.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsR.M. Rao, S.A. Dianat, M.D. Zoltowaki, R. Singh, S. Miller
Pages222-230
Number of pages9
Volume5819
DOIs
StatePublished - 2005
EventDigital Wireless Communications VII and Space Communication Technologies - Orlando, FL, United States
Duration: Mar 28 2005Mar 31 2005

Other

OtherDigital Wireless Communications VII and Space Communication Technologies
CountryUnited States
CityOrlando, FL
Period3/28/053/31/05

Fingerprint

Spread spectrum communication
communication
Communication
receivers
simulation
Gold
Frequency hopping
Application specific integrated circuits
Communication systems
gold
frequency hopping
filters
Bandwidth
application specific integrated circuits
carrier frequencies
wireless communication
Monitoring
logic
telecommunication
bandwidth

Keywords

  • Asynchronous
  • Gold Codes
  • Low-power
  • Spread Spectrum
  • Wireless Communications

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Welch, E. B., Holmes III, D. R., Coker, J. D., Schaefer, T. M., Gilbert, B. K., & Daniel, E. S. (2005). Asynchronous spread spectrum communication paradigm for use in low-power applications: Description and simulation results. In R. M. Rao, S. A. Dianat, M. D. Zoltowaki, R. Singh, & S. Miller (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5819, pp. 222-230). [25] https://doi.org/10.1117/12.604249

Asynchronous spread spectrum communication paradigm for use in low-power applications : Description and simulation results. / Welch, E. Brian; Holmes III, David R.; Coker, Jonathan D.; Schaefer, Timothy M.; Gilbert, Barry Kent; Daniel, Erik S.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / R.M. Rao; S.A. Dianat; M.D. Zoltowaki; R. Singh; S. Miller. Vol. 5819 2005. p. 222-230 25.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Welch, EB, Holmes III, DR, Coker, JD, Schaefer, TM, Gilbert, BK & Daniel, ES 2005, Asynchronous spread spectrum communication paradigm for use in low-power applications: Description and simulation results. in RM Rao, SA Dianat, MD Zoltowaki, R Singh & S Miller (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5819, 25, pp. 222-230, Digital Wireless Communications VII and Space Communication Technologies, Orlando, FL, United States, 3/28/05. https://doi.org/10.1117/12.604249
Welch EB, Holmes III DR, Coker JD, Schaefer TM, Gilbert BK, Daniel ES. Asynchronous spread spectrum communication paradigm for use in low-power applications: Description and simulation results. In Rao RM, Dianat SA, Zoltowaki MD, Singh R, Miller S, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5819. 2005. p. 222-230. 25 https://doi.org/10.1117/12.604249
Welch, E. Brian ; Holmes III, David R. ; Coker, Jonathan D. ; Schaefer, Timothy M. ; Gilbert, Barry Kent ; Daniel, Erik S. / Asynchronous spread spectrum communication paradigm for use in low-power applications : Description and simulation results. Proceedings of SPIE - The International Society for Optical Engineering. editor / R.M. Rao ; S.A. Dianat ; M.D. Zoltowaki ; R. Singh ; S. Miller. Vol. 5819 2005. pp. 222-230
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