. We develop a new theoretical framework to analyze this extreme case and develop new algorithms for signal reconstruction from such coarsely quantized measurements. The 1-bit CS framework leads us to scenarios where it may be more appropriate to reduce bit-depth instead of sampling rate. We find

ii Internet broadcasting techniques are wide spread and have been the focus off many research projects. Due to high transmission delays these systems often lack interactivity. This thesis introduces a new streaming system to deliver real-time video and audio data with low-delays across the Internet. Packet loss, jitter and changing bandwidth availability describe the challenges that have to be handled by the system, since the Internet is a best effort network and does not guarantee quality of service. To lower bit-rates audio and video data are usually compressed in formats like MPEG-4. The high compression nearly eliminates redundancy in the audio and video data. A resultant loss of transmitted data and transmission errors can have big impact on the quality of the received stream. MPEG-4 video uses inter frame prediction, so errors propagate between frames. We will argue that retransmission of lost or invalid data is not feasible for low-delay communication due to high control loop delays.

April 29, 2011Für UnsShe had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it Lewis CarrollThe following document, written under the supervision of Dr. reviewed by:

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necessarily representing the official policies or endorsements, either express or implied, of ARO,

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/O architectures such as RAID and SSD/HDD storage hierarchy, and provides up to 2.8 speedup over state-of-the-art pure SSD storage. Furthermore, I-CASH reduces random writes to SSD implying reduced wearing and prolonged life time of the SSD. 1.

I herewith certify that all material in this dissertation which is not my own work has been properly acknowledged.