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Energy efficiency in wireless communication systems

United States Patent

December 11, 2012
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Wireless communication systems and methods utilize one or more remote terminals, one or more base terminals, and a communication channel between the remote terminal(s) and base terminal(s). The remote terminal applies a direct sequence spreading code to a data signal at a spreading factor to provide a direct sequence spread spectrum (DSSS) signal. The DSSS signal is transmitted over the communication channel to the base terminal which can be configured to despread the received DSSS signal by a spreading factor matching the spreading factor utilized to spread the data signal. The remote terminal and base terminal can dynamically vary the matching spreading factors to adjust the data rate based on an estimation of operating quality over time between the remote terminal and base terminal such that the amount of data being transmitted is substantially maximized while providing a specified quality of service.
Caffrey; Michael Paul (Los Alamos, NM), Palmer; Joseph McRae (Los Alamos, NM)
Los Alamos National Security, LLC (Los Alamos, NM)
12/ 763,973
April 20, 2010
STATEMENT REGARDING FEDERAL RIGHTS This invention was made with Government support under Contract Number DE-AC52-06NA25396 awarded by the United States Department of Energy. The Government has certain rights in the invention.