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Signal Strength based Communication in Wireless Sensor Networks (Sensor Network Estimation) Imran S. Ansari EE 242 Digital Communications and Coding (Fall 2009) Department of Electrical Engineering Division of Physical Sciences and Engineering King Abdullah University of Science and Technology December 12, 2009

December 12, 2009

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Signal Strength based Communication in Wireless Sensor Networks (Sensor Network Estimation) Imran S. Ansari EE 242 Digital Communications and Coding (Fall 2009) Department of Electrical Engineering Division of Physical Sciences and Engineering King Abdullah University of Science and Technology. - PowerPoint PPT Presentation

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Page 1: December 12, 2009

Signal Strength based Communication in Wireless Sensor Networks (Sensor Network Estimation)

Imran S. Ansari

EE 242 Digital Communications and Coding (Fall 2009)

Department of Electrical EngineeringDivision of Physical Sciences and Engineering

King Abdullah University of Science and Technology

December 12, 2009

Page 2: December 12, 2009

KAUST King Abdullah University of Science and Technology 2

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 3: December 12, 2009

KAUST King Abdullah University of Science and Technology 3

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 4: December 12, 2009

Introduction

WSNs – Wireless Sensor Networks

Characteristics/Features

Reducing the actual sensor nodes in action!!

Page 5: December 12, 2009

KAUST King Abdullah University of Science and Technology 5

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 6: December 12, 2009

Related Work

Nodes compress data and encode their observations before transmission

MSE (Mean Square Error) is one of the prime criterion for the performance analysis of WSNs.

Coherent vs. Orthogonal

Power and BW constraints

MAC is coherent

Gaussian Waveforms

Nodes requirement threshold

Page 7: December 12, 2009

KAUST King Abdullah University of Science and Technology 7

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 8: December 12, 2009

Proposed Design - Setup

Page 9: December 12, 2009

Proposed Design – Algorithm (Implementation)

Event Source

At the Sensor Nodes

Session of ‘t’ time intervals

Threshold setting process

Status of the nodes

Begin Transmission

Page 10: December 12, 2009

Proposed Design – Algorithm (Implementation)

At the BS (receiver’s) end

Session of ‘t’ time intervals

Threshold setting process

Receives data and performs following calculations

Page 11: December 12, 2009

Proposed Design – Algorithm (Implementation)

Page 12: December 12, 2009

Proposed Design – Algorithm (Implementation)

Page 13: December 12, 2009

Proposed Design – Algorithm (Implementation)

Hence, the complete process is repeated for next time interval.

Page 14: December 12, 2009

KAUST King Abdullah University of Science and Technology 14

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 15: December 12, 2009

Results Analysis

Page 16: December 12, 2009

Results Analysis

Page 17: December 12, 2009

KAUST King Abdullah University of Science and Technology 17

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 18: December 12, 2009

Conclusion

WSNs can be made more efficient

The proposed design lead to quite successful and positive results

Page 19: December 12, 2009

KAUST King Abdullah University of Science and Technology 19

OUTLINE

Introduction

Related Work

Proposed Design

Setup

Implementation (Algorithm)

Results Analysis

Conclusion

Future Work

Page 20: December 12, 2009

Future Work

Extend this work to more complex situations and assumptions

Perform practical modeling of the proposed design

Page 21: December 12, 2009

Thank you!!

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