Publication: An energy-efficient adaptive modulation suitable for wireless sensor networks with SER and throughput constraints
Loading...
Identifiers
Publication date
2007-05-17
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
SpringerOpen
Impact
Export
Abstract
We consider the problem of minimizing transmission energy in wireless sensor networks by taking into account that every sensor
may require a different bit rate and reliability according to its particular application. We propose a cross-layer approach to tackle
such a minimization in centralized networks for the total transmission energy consumption of the network: in the physical layer,
for each sensor the sink estimates the channel gain and adaptively selects a modulation scheme; in the MAC layer, each sensor is
correspondingly assigned a number of time slots. The modulation level and the number of allocated time slots for every sensor are
constrained to attain their applications bit rates in a global energy-efficient manner. The signal-to-noise ratio gap approximation
is used in our exposition in order to jointly handle required bit rates, transmission energies, and symbol error rates.
Description
Keywords
Adaptive modulation, Wireless sensor networks, WSNs
Bibliographic citation
EURASIP Journal on Wireless Communications and Networking 2007, 2007:041401