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Low-power direct-sequence spread-spectrum modem architecture for distributed wireless sensor networks

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3 Author(s)
Chien, C. ; Rockwell Sci. Center, Thousand Oaks, CA, USA ; Elgorriaga, I. ; McConaghy, C.

Emerging CMOS and MEMS technologies enable the implementation of a large number of wireless distributed microsensors that can be easily and rapidly deployed to form highly redundant, self-configuring, and ad hoc sensor networks. To facilitate ease of deployment, these sensors should operate on battery for extended periods of time. A particular challenge in maintaining extended battery lifetime lies in achieving communications with low power. This paper presents a direct-sequence spread-spectrum modem architecture that provides robust communications for wireless sensor networks while dissipating very low power. The modem architecture has been verified in an FPGA implementation that dissipates only 33 mW for both transmission and reception. The implementation can be easily mapped to an ASIC technology with an estimated power performance of less than 1 row

Published in:

Low Power Electronics and Design, International Symposium on, 2001.

Date of Conference:

2001