This paper first gives a brief introduction to Multiple Input Multiple Output (MIMO) wireless communication systems. Various architectures of MIMO systems and corresponding features are discussed, including those proposed for the IEEE 802.11n standard. The impact on chip area and required data processing rates is then presented.

This paper suggests that since web browsing is an interactive process and downloading a web page can take several seconds to several minutes over slow links, the information presented to the user during this time is important. We present new metrics and visualization techniques to illustrate and quantify web page loading. Given the insight afforded by the metrics, we propose a methodology to improve web access using a new technique, globally progressive interactive web delivery. This technique views the web delivery process as the remote display of a web page and entails applying progressive coding to the document transmission process in its entirety. It also allows the user to explicitly direct link bandwidth to images of interest. This globally progressive interactive framework has been prototyped without modifying either existing web browsers or servers through the use of a web proxy and browser-side Java applets. The framework allows for both protocol and image compression research in a platform-independent manner. Directions of current work on integrating the architecture into existing web infrastructure for greater performance and scalability are discussed.

A new image compression technique, flexible automatic block decomposition (FABD), losslessly compresses typical discrete-tone pseudo-color images 1.5 to 5.5 times more compactly than GIF, and up to twice as compactly as JBIG. The algorithm is designed to exploit the two-dimensional redundancy in an image by expressing the image in terms of itself. Several optimizations allow the algorithm to complete in a matter of seconds on a 100 MIPS processor. Decompression is fast and simple, as is required in a Web browsing environment. Entropy coding techniques result in a coding rate of typically 0.03 bpp-0.20 bpp.