Reducing Cost-per-Bit: Future Wireless

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Reducing Cost-per-Bit Future Wireless Tim
Moulsley Philips Research Chair of Core 4
Efficiency Industry Steering Group
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Introduction

• The reverse side of the coin to new revenue
  generation is cost constraint
• Drivers are
• New radio
• Innovative use of radio spectrum
• Deregulation trend
• This element of the Core 4 programme applies
• Combination of physical layer techniques
• Cognitive radio
• Cross-layer operation
• To secure new Delivery Efficiencies
• Acknowledgement
• Is the main source of funding for the 22
  researchers

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Context Mobile Convergence
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Context Capability Evolution
Driving performance beyond todays limits
30
10
Typical range (km)
GPRS
4G
EGPRS
1
UMTS
UMTS LTE
HSDPA
802.16
802.11x
0.1
1
10
100
0.1
Typical user rate (Mbps)
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Programme Objective

• Highest Performance and Efficiency

• Approach
• Joint optimisation of link-level system level
• Dynamic spectrum use
• Cross-layer adaptation and auto-planning
• . Applied to different system topologies
• Assumptions
• Starting point 3GPP UMTS Long Term Evolution
• Multiple Antennas
• Multi-Carrier vs. Single-Carrier
• Bandwidth 1.25 MHz - 100 MHz
• Operating Frequency 450 MHz - 5 GHz

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Holistic Approach to Efficiency
Objectives
Service Quality
Cost
System Capacity
Efficiency Cost/bit/sec/Hz/area ???
Spectrum Usage
System Architecture
Air-Interface Options
Sub-System Features

• Multiple Access
• Link Adaptation
• Modulation/Coding
• Multiple Antennas
• Beamforming
• Interference Suppression
• Advanced Receivers

• Fixed vs Dynamic
• Spectrum Allocation vs. Spectrum Selection
• Cognitive Radio
• (Spectrum Sensing, Technology
• Identification)

• Cellular
• Multihop
• Full Mesh
• Cooperative Relaying
• Resource Management
• Multi-Layer Operation

Technologies
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System Topologies
Multihop
freq. 1
Mesh
freq. 1
A3
An
A2
BS
Distributed Antennas
Co-located
A1
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Work Programme Structure

• WP1 Optimum Combination of Air-Interface
  Techniques
• (Prof Lajos Hanzo, University of Southampton)
• Advanced MTMR Techniques
• Performance Evaluation of Air Interface
  Techniques
• RF Requirements in Co-operative Terminals
• WP2 Spectrum Sharing Enabling Techniques
  through Cognitive Radio (Prof Mark Beach,
  University of Bristol)
• Spectrum Sharing
• Impact on System Requirements
• Spectrum Sharing Efficiency Gains
• WP3 Joint Link System Resource
  Management(Prof Hamid Aghvami, Kings College
  London)
• Cross-layer Resource Management
• Adaptive Self-Organising Networks
• Overall System Efficiency

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Research Output

• Wireless solutions offering leading-edge
  performance and efficiency

• Enhancements to physical layer for efficient
  delivery
• Design rules for dynamic spectrum management
• Theoretical and achievable gains from spectrum
  sharing
• How to do joint link and system optimisation
• Scalable and modular cross-layer operation
• Documented in Internal Reports, Patents, Journal
  Publications

 
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