In this paper, we propose a compression method that allows for the efficient storage of large amounts of CAN traffic data, which is needed for the forensic investigations of accidents caused by cyber attacks on vehicles. Compression of recorded CAN traffic also reduces the time (or bandwidth) needed to off-load that data from the vehicle. In addition, our compression method allows analysts to p...

Chirped X-ray pulse compression is a promising approach for generating ultra-short free electron laser (XFEL) pulses. The design of compressors requires the careful control group delay dispersion (GDD), which plays critical role in achieving optimal compression. However, penetration crystals and multilayers can induce an extra GDD, may result over-compression or under-compression. In this study...

We have recently introduced a novel compression algorithm for packet networks: delayed-dictionary compression, which enables an improved compression-latency trade-off. By allowing delay in the dictionary construction, the algorithm handles effectively the problems of packet drops and packet reordering: Its compression quality is close to that of streaming compression (and is substantially bette...

In fact, video compression techniques like MPEG-4 and others are reducing the wireless bandwidth needed for streaming video. But there still remain other factors, which are just as critical as bandwidth, if not more so. Beyond bandwidth, the other half of the streaming video equation is the architecture and capabilities of the terminal device itself. Even if unlimited wireless bandwidth were su...

Multi-view auto-stereoscopic images and image sequences require large amounts of space for storage and large bandwidth for transmission. High bandwidth can be tolerated for certain applications where the image source and display are close together but, for long distance or broadcast, compression of information is essential. We report on the results of our two-year investigation into multi-view ...

This paper presents a new ultra-wideband LNA which employs the complementary derivative superposition method in noise cancellation structure. A pMOS transistor in weak inversion region is employed for simultaneous second- and third-order distortion cancellation. Source-degeneration technique and two shunt inductors are added to improve the performance at high frequencies. The degeneration induc...

The simulation of ultrasound signals is a computationally intensive task from the perspective of the number of floating point operations required and memory bandwidth. This project involves simulating realistic ultrasound signals using the Westervelt Equation on a GPGPU with a focus on the memory bandwidth bottleneck. This project explores a data compression technique which uses floating point ...

This document specifies a ROHC (Robust Header Compression) profile for compression of TCP/IP packets. The profile, called ROHC-TCP, provides efficient and robust compression of TCP headers, including frequently used TCP options such as SACK (Selective Acknowledgments) and Timestamps. ROHC-TCP works well when used over links with significant error rates and long round-trip times. For many bandwi...

We present a survey of results on how to implement low-complexity lossless data compression on a high speed network, so that the computational phase requires no interprocessor communication. It follows that the computation in between the input and output phases has a linear speed-up when the network size increases, regardless of the bandwidth and latency of the network. Depending on the type of...

Bandwidth is a premium resource in ground-air and air-ground communication links. Transmission of raw Doppler weather radar data over these links incurs significant latency and high cost. Traditional image compression techniques utilizing spatial redundancy of pictorial data for reducing the bit-rate achieve at most an order-of-magnitude of compression ratios. An efficient compression scheme fo...