Multiple-Access Interference Suppression for OFDM Systems
- Summary
- Researchers at Purdue University have developed a method to change the historical disadvantages of the Doppler Shifts into benefits. This method exploits Doppler Shifts caused by motion, which ultimately allows more information to be conveyed in a communication network. This performance increase is achieved by adding only a very small amount of structure to transmitted signals. This method applies to wireless multiple access systems.
- Technology Benefits
- Exploits Doppler effects to improve the performance of communication systemsLow-cost implementation Remarkable gains in signal to noise ratio are possibleAllows Doppler to be used as an extra dimension in a system for differentiation of signals
- Technology Application
- Signal ProcessingTelecommunications
- Detailed Technology Description
- James LehnertPurdue Electrical and Computer Engineering
- Countries
- United States
- Application No.
- 7,751,509
- *Abstract
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- *Background
- The economics of personal communication systems and cellular communications are driven by the ability to convey as much information as possible using a limited radio frequency bandwidth. More effective signal designs provide the ability to reach more customers. Various forms of signaling diversity have been used to increase the capacity; however, the diversity of motion has not been exploited. In the past, Doppler Shift Effects have been problems that were compensated for in communication systems. Hence, circuits have been developed to compensate for the Doppler shifts that result from motion.
- *IP Issue Date
- Jul 6, 2010
- *IP Type
- Utility
- *Stage of Development
- Process Validation in Lab
- *Web Links
- Purdue Office of Technology CommercializationPurdueInnovation and EntrepreneurshipJames LehnertPurdue Electrical and Computer Engineering
- Country/Region
- USA
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