Patent ID: 7593342
Filing Date: 2009-09-22
Classification: H04B,H04L,H04W

Abstract:
1. A method for selecting a route in a wireless cooperative relay network of nodes, the nodes including a source, a set of relays, and a destination, comprising the steps of: encoding a codeword as a data stream; transmitting the data stream from a source to a destination via a set of relays; accumulating mutual information at a particular node to decode the data stream and recover the codeword; and selecting a route from the source to the destination based on channel state information between the nodes while transmitting and accumulating, wherein the selecting uses an optimization process and optimization criterion, and wherein the optimization process minimizing a penalty function, and wherein the optimization process iteratively subtracts nodes from a suboptimum route that lead to a largest improvement of the penalty function, and wherein the optimization method is to iteratively subtract the nodes from a predetermined route that do not substantially increase an amount of the accumulated mutual information.