Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for determining a set of communication parameters for receiving data transmissions. In some implementations, a method includes receiving a first data transmission sent according to a first communication parameter scheme that includes at least one of a first modulation or a first coding. A second data transmission is received. A second communication parameter scheme of the second transmission is determined.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for determining a set of communication parameters for receiving data transmissions. In some implementations, a method includes receiving a first data transmission sent according to a first communication parameter scheme that includes at least one of a first modulation or a first coding. A second data transmission is received. A second communication parameter scheme of the second transmission is determined.

Abstract: Methods, systems, and apparatus include computer programs encoded on a computer-readable storage medium for providing content to a group of users. A method includes: determining that a plurality of users are in proximity to each other and a likelihood that the users are viewing content on a single device; receiving a request for content from the single device; identifying a profile associated with each of the plurality of users, the profile for use in identifying relevant content for delivery to a respective user; creating a group profile based on the identified profiles; and selecting one or more content items for delivery responsive to the request based at least in part on the group profile.