Minimum Energy coding in CDMA Wireless Sensor Networks

A theoretical framework is proposed for accurate comparison of minimum energy coding in coded division multiple access (CDMA) wireless sensor networks (WSNs). Energy consumption and reliability are analyzed for two coding schemes: minimum energy coding (ME), and modified minimum energy coding (MME)....

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 8; no. 2; pp. 985 - 994
Main Authors: Fischione, C., Johansson, K.H., Sangiovanni-Vincentelli, A., Ares, B.Z.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.02.2009
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Applied sciences
Bit error rate
CDMA
Code division multiple access
Coding
Coding, codes
Computer networks
control
Dynamics
Energy consumption
Exact sciences and technology
Information, signal and communications theory
Interference
Mathematical models
minimum energy coding
Modulation coding
Multiaccess communication
Networks
OOK
outages
parallel and distributed computation
power
Power control
Power system modeling
Radio
Radiocommunications
Sensors
Services and terminals of telecommunications
Signal and communications theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Telemetry. Remote supervision. Telewarning. Remote control
Transmission and modulation (techniques and equipments)
Transmitters. Receivers
Wireless communication
Wireless sensor network (WSNs)
Wireless sensor networks
Performance evaluation
Bit error rate
Wireless telecommunication
Distributed computing
Remote sensing
Transceiver
Energy characteristic
Coding
parallel and distributed computation
Wireless sensor network (WSNs)
Minimum energy
Signal detection
Multiple access
On off keying
Parallel algorithm
Outage
outages
CDMA
OOK
minimum energy coding
Power control
Code division multiple access
Distributed algorithm
Telecommunication channels
Wireless network
Numerical simulation
Parallel computation
Sensor array
ISSN:1536-1276, 1558-2248, 1558-2248
Online Access:Get full text
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Description
Summary:A theoretical framework is proposed for accurate comparison of minimum energy coding in coded division multiple access (CDMA) wireless sensor networks (WSNs). Energy consumption and reliability are analyzed for two coding schemes: minimum energy coding (ME), and modified minimum energy coding (MME). A detailed model of consumed energy is described as function of the coding, radio transmit power, the characteristics of the transceivers, and the dynamics of the wireless channel. Since CDMA is strongly limited by multi-access interference, the system model includes all the relevant characteristics of wireless propagation. A distributed and asynchronous algorithm, which minimizes the total energy consumption by controlling the radio power, is developed. Numerical results are presented to validate the theoretical analysis and show under which conditions MME outperforms ME with respect to energy consumption and bit error rate. It is concluded that MME is more energy efficient than ME only for short codewords.
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ISSN:1536-1276
1558-2248
1558-2248
DOI:10.1109/TWC.2009.080239