In this thesis we focus on two problems: challenges and proposed algorithms for transmission power control in wireless Ad hoc networks; and performance and implementation issues in a multi-band OFDM Ultra-Wide Band (UWB) system....[ Read more ]

In this thesis we focus on two problems: challenges and proposed algorithms for transmission power control in wireless Ad hoc networks; and performance and implementation issues in a multi-band OFDM Ultra-Wide Band (UWB) system.

Minimizing the total power of transmission over a wireless network with fixed transmission rate to save energy is a critical consideration in Ad hoc networks, especially for sensor networks. This thesis research investigates the Accumulative Repetition Forwarding (ARF) strategy in a wireless ad-hoc network using a cooperative forwarding approach that allows adaptive power allocation among nodes. We analyze the feasibility and performance of an iterative power allocation algorithm for such networks, and the result shows our proposed solution can be computed in polynomial time and brings significant improvement in network performance. Meanwhile for the UWB implementation, using the new tools - Simulink model - we obtain a comprehensive understanding of the system. The Simulink model verifies the correctness of the UWB implementation algorithm and generates test vectors for the hardware design.