Abstract: A mechanism for jointly correcting carrier phase and carrier frequency errors in a demodulated signal. A computer system may receive samples of a baseband input signal (resulting from QAM demodulation). The computer system may compute values of a cost function J over a grid in a 2D angle-frequency space. A cost function value J(?,?) is computed for each point (?,?) in the grid by (a) applying a phase adjustment of angle ? and a frequency adjustment of frequency ? to the input signal; (b) performing one or more iterations of the K-means algorithm on the samples of the adjusted signal; (c) generated a sum on each K-means cluster; and (d) adding the sums. The point (?e, ?e) in the 2D angle-frequency space that minimizes the cost function J serves an estimate for the carrier phase error and carrier frequency error. The estimated errors may be used to correct the input signal.

Abstract: A touch-gesture wiring method for connecting data flow wires to input/output terminals of nodes in a graphical program is described. The method may be implemented by a graphical programming application that executes on a mobile device that includes a touch-sensitive screen configured to receive user input as touch gestures. The method may aid the user by displaying a magnified view of the input/output terminals that makes it easier (relative to the default view of the graphical program) for the user to see the input/output terminals and/or easier to select a desired one of the input/output terminals.

Abstract: A system and method for creating and using type generic graphical programs. The method may include storing a first graphical program on a memory medium. The first graphical program may have been created based on user input. The first graphical program may include a plurality of nodes and interconnections between the nodes, and the plurality of nodes and interconnections between the nodes may be type generic. User input may be received specifying one or more data types of at least one input and/or at least one output of the first graphical program. The data types may be associated with the first graphical program in response to said user input specifying the one or more data types.