Power-efficient Joint Transmitter-Receiver Beamformer Design for Wireless Ad Hoc Network
Date Issued
2010
Date
2010
Author(s)
Chang, Chia-Yu
Abstract
Wireless Ad Hoc network, in recent several years, has been widely thought of as another possible development direction in wireless network in contrast with traditional infrastructure based wireless network. Because wireless ad hoc network doesn’t need any time or cost spent on infrastructure construction, so it can be used in remote area or the place where doesn’t exist any infrastructure. And because of its distributive nature, ad hoc network is more robust compared to traditional wireless network. Due to several unique advantages, wireless ad hoc network makes more researchers and engineers pay more attention to it.
In this thesis, an ad hoc network operation flow chart is proposed based on ad hoc network feature and 802.11 Ad Hoc mode standard. And in this flow chart, we have two communication scenarios in wireless ad hoc network: unicast and multicast. So, we will design the joint transmitter-receiver beamformer algorithm at both ends to utilize the power-saving and interference-mitigation characteristics of beamforming. And both two characteristics are important to build up a power-efficient transceiver in wireless ad hoc network. After each of the two beamforming design algorithms, we will make some simulation results and compared with some existing algorithms to see its performance. From the comparison result, we can find these two beamforming design algorithms are efficient in reducing the transmit power. Here we will discuss the detail derivations in how to design these two types of beamforming algorithms.
Subjects
Joint Beamformer
Wireless Ad Hoc network
Power-efficient
unicast
multicast
Type
thesis
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