Wireless Mobile Phones Power Consumption Reduced Through Conditioning of Analog and Digital Signals
This invention is part of a package that combines a number of different techniques for lowering the power consumption of next-generation wireless mobile phones. The generic architecture for products such as mobile phones, pacemakers, DVD players or other devices that interface to the analog world yet process most information in the digital domain require the following: 1) conditioning of signals on input or output, 2) conversion of these signals to and from the digital domain, and 3) processing within the digital domain are all areas actively under research by the faculty and students in CISL. The Columbia technologies in this package focus on two of these areas. First, they help efficiently perform the required conditioning of signals in the ""0-IF"" transceiver especially in the presence of noise. Second, they provide asynchronous processing technology that can dramatically improve the power consumption of the DSPs and CPUs used for digitally processing the converted signals and implementing other phone functions. Additionally, for a given power budget, the technologies may be used to extract a desired signal from a high noise environment, construct a cleaner signal for transmission, increase the accuracy and precision of the A/D and D/A processes, or process more information in a shorter period of time.