COGNITIVE MULTI-USER OFDMA

摘要

A computing device operating according to a frequency division multiplexed protocol in which communication occurs over a signal formed from a plurality of sub-channels selected from anywhere in a frequency spectrum. A computing device may select sub-channels cognitively by using information about sub-channels previously deemed suitable or unsuitable by that computing device or other computing devices. A described technique for determining sub-channel suitability includes analyzing radio frequency energy in the sub-channel to detect signals generated by another computing device or high noise levels. Information may also be used to cognitively select sub-channels to be analyzed, such as by first selecting for analysis previously-used sub-channels.

主权项

1. A system comprising a computing device that includes at least one processor and at least one program module that are together configured for performing actions comprising:
determining, by the computing device, a number of sub-channels of a plurality of sub-channels within a spectrum, where the determined number of sub-channels is sufficient for transmitting data at a desired data rate; and selecting, by the computing device, ones of the plurality of sub-channels, until the determined number of sub-channels is selected, where the selecting avoids any of the plurality of sub-channels that are deemed unsuitable for communication.