Abstract: Techniques to derive a channel estimate using substantially fewer number of complex multiplications than with a brute-force method to derive the same channel estimate. In one method, an intermediate vector B is initially derived based on K sub-vectors of a vector {circumflex over (H)} for a channel frequency response estimate and at least two DFT sub-matrices for a DFT matrix {tilde over (W)}, where K>1. An intermediate matrix A for the DFT matrix {tilde over (W)} is also obtained. A least square channel impulse response estimate is then derived based on the intermediate vector B and the intermediate matrix A. In one implementation, the intermediate vector B is obtained by first computing DFTs of a matrix ?T×L, which is formed based on the vector {circumflex over (H)}, to provide a matrix GL×L. Inner products between the columns of a base DFT sub-matrix W1 and the rows of the matrix GL×L are then computed to obtain the entries of the intermediate vector B.

Abstract: The present invention provides a business process feature for providing universal registration in an information appliance network. The business process feature includes providing user registration information to a universal registration resource, the user registration information accessible by providers of resources via the information appliance network. The business process feature further includes requesting use of a provider resource requiring the user registration information wherein the provider resource automatically retrieves the user registration information from the universal registration resource to enable the user to access the resources. Additionally, the present invention provides a method for providing universal registration, including accessing a resource, passing a registration interface dynamic base object to the resource, and interrogating the registration interface dynamic base object for registration information.

Abstract: The present invention is directed to a system and method of interacting with broadcast content based upon position. By providing a method and apparatus suitable for interacting with broadcast content based upon position, a user has a dynamic and flexible way of interacting with broadcast content. A method for determining availability of broadcast content to a broadcast content receiver may include determining position of a broadcast content receiver. The broadcast content receiver is suitable for obtaining broadcast content. A broadcast data is queried by the broadcast content receiver for broadcast transmittal data corresponding to the determined position of the broadcast content receiver.

Abstract: The present invention provides an object driven software architecture that allows objects written in any programming language running on any operating system or hardware to communicate with any other object written in any other programming language running on any other operating system or any other hardware including objects executing on the same system or executing on different systems coupled via a network.