Mapping signals from a virtual frequency band to physical frequency bands

US9077492B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Yong He · Beijing, CN
• Kun Tan · Beijing, CN
• Haichen Shen · Seattle, US
• Jiansong Zhang · Beijing, CN
• Yongguang Zhang · Beijing, CN

Key dates

• Filing date: Nov 10, 2011
• Grant date: Jul 7, 2015
• Expiry date: Mar 21, 2034

Classification

• Technology area (CPC —): General

Abstract

Embodiments include processes, systems, and devices for reshaping virtual baseband signals for transmission on non-contiguous and variable portions of a physical baseband, such as a white space frequency band. In the transmission path, a spectrum virtualization layer maps a plurality of frequency components derived from a transmission symbol produced by a physical layer protocol to sub-carriers of the allocated physical frequency band. The spectrum virtualization layer then outputs a time-domain signal derived from the mapped frequency components. In the receive path, a time-domain signal received on the physical baseband is reshaped by the virtual spectrum layer in order to recompose a time-domain symbol in the virtual baseband.