IMAGES Chaitali Chakrabarti Department of Electrical Engineering Telecommunications Research Center Arizona State University Tempe, AZ 85287-5706 [email protected] ABSTRACT In this paper we present an architecture for a 2-D Discrete Wavelet Transform (DWT)-based encoder that handles computations along the border e ciently by using the method of symmetric extension. We choose symmetric extension ...

Wireless networks are envisioned to consist of large number of inexpensive and small nodes with sensing, data processing, and communication capabilities which are densely deployed in a region of interest and collaborate to accomplish a common task. One main challenge in design of these networks is their vulnerability to security attacks. However, there are various techniques exists in the liter...

Universal filtered multi-carrier (UFMC) systems offer a flexibility of filtering arbitrary number of subcarriers to suppress out of band (OoB) emission, while keeping the orthogonality between subbands and subcarriers within one subband. However, subband filtering may affect system performance and capacity in a number of ways. In this paper, we first propose the conditions for interference-free...

In this paper, we investigate the diversity, capacity and complexity issues of cooperative Zero-Padding (ZP)-Orthogonal Frequency Division Multiplexing (OFDM) communication. We consider cooperative ZP-OFDM communication over a multipath Rayleigh channel and with multiple Carrier Frequency Offsets (CFOs) existing at different relays. We use a cooperative tall Toeplitz scheme to achieve full coop...

One very basic necessity for foam padding testing technology is the ability to test two different padding samples and compare the results. The current standard for testing is to use a steel anvil backing for the padding, create an impact and record the parameters of the collision. The standardized method of testing with a steel anvil backing may not truly depict which foam or padding is actuall...

Anonymous web browsing is a hot topic with many potential applications for privacy reasons. However, there are few such systems which can provide high level anonymity for web browsing. The reason is the current dominant dummy packet padding method for anonymization against traffic analysis attacks. This method inherits huge delay and bandwidth waste, which inhibits its use for web browsing. In ...

In this paper we consider a regulated monopoly that can pad its costs to increase its cost reimbursement. Even while padding is inefficient the optimal incentive scheme tolerates some padding of costs to reduce the information rents paid to low cost types. It is shown that high cost firms pad costs more than low cost firms. We also show that cost padding moves pricing away from Ramsay optimal p...