الفهرس | Only 14 pages are availabe for public view |
Abstract Wireless communications has become the most desirable communication choice among users. In this thesis, we focus on two types of Wireless Personal Area Networks (WPANs); Bluetooth and ZigBee. The Bluetooth (IEEE 802.15.1) technology aims at allowing wireless short-range communications between several devices. The ZigBee (IEEE 802.15.4) is a Low-Rate Wireless Personal Area Network (LR-WPAN) designed to be simple for low-power devices and light-weight wireless networks. The common thread between the two types of networks is the short range coverage. The work in this thesis comprises two main points; efficient data framing, efficient image, and audio communication with both networks. Different packet formats with coding and interleaving are investigated in this thesis in Bluetooth and ZigBee networks. Block and convolutional codes are studied in this thesis on both Bluetooth and ZigBee networks with a complexity treatment. Optimized packets are used in this thesis for audio and image communication with an efficient chaotic interleaving mechanism. Audio watermarking is exploited in this thesis as a tool to hide information inside audio signals for transmission over Bluetooth and ZigBee networks. The objective of this study is to increase the security of datacommunication over these types of networks, while maintaining the high fidelity of the communicated images and signals. |