Resource-efficient multi-antenna designs for mobile ad hoc networks : focus on PHY, MAC and Cross-Layer / Feng Xu. 2008
Content
- Introduction
- Mobile ad hoc networks (MANETs)
- Resources in wireless communications
- Definitions on resource-efficiency
- The objective of this work
- The outline of this thesis
- PHY Layer Designs: Multi-Antenna Techniques
- Traditional single antenna digital communication system
- Smart antennas (beamforming)
- Space diversity techniques
- Multiple-Input Multiple-Output (MIMO)
- A cost analysis on multi-antenna techniques based on hardware complexity and power consumption
- MAC and Cross-Layer Designs
- Traditional MAC designs for MANETs
- The CSMA/CA used by IEEE 802.11 MAC
- Examples for further explanations on CSMA/CA
- My proposal to the exposed node problem
- BF-MAC
- Space diversity MAC (SD-MAC)
- BF-MAC vs. SD-MAC
- Radiation power control (PC)
- Transceiver power management (PM)
- Network simulation
- Resource-efficiency comparison
- Simplified Switched Beam (SSB): PHY + MAC Design and Simulation
- Motivation
- Antenna array selection
- The design of SSB
- Basic principle
- Analysis on the length of the training period
- SSB-MAC: the associated MAC protocol
- Beamforming vs. Diversity
- Interference suppression (IS) technique
- Network simulation
- Resource-efficiency comparison
- SSB Test-bed Implementation and Measurements
- Carrier frequency band selection
- Hardware implementation
- Software stack
- Test-bed measurements and analysis
- Conclusions and Outlook
- SSB Processing Unit (SPU) Implementation Details
- Operating specification of CC2400 SPI
- Top-level schematic diagram of the SPU
- State machine descriptions for each component of the SPU
- Sub-modules of SPI master
- Large packet transfer support of SPI master
- Sub-modules of SSB controller
- Other auxiliary modules of the SPU
- Experiences learned from the implementation
- The array signal processing must be performed using the hardware-based solution
- Two VHDL design tips
- Measured timing diagrams on I/Os between CC2400 and SPU
- Derivation of IF and Baseband Signals with Phase Shift
- Derivation on the I-channel
- Derivation on the Q-channel
- Derivation applying the analytic signal representation
- Derivation of baseband signals with phase shift
- Concluding remarks
- List of Abbreviations
- List of Symbols
- List of Figures
- List of Tables