Patent ID: 9565717
Date: 2017-02-07
CPC Classifications: H01Q,H04B,H04W

Claim:
1. An ad-hoc network system, comprising: at least one multi-element reconfigurable transmitter and/or at least one multi-element reconfigurable receiver where each said multi-element reconfigurable transmitter and receiver comprises multiple antennas where each antenna is capable of changing a radiation pattern and/or a polarization of a radiated field; and a processor that processes software implementing a configuration selection method for selecting an antenna configuration for said at least one multi-element reconfigurable transmitter and/or receiver, where the antenna configuration is selected based on changes in interference in a transmission over a transmission link including the antenna being configured, a transmission rate of at least one transmitter, a received signal strength of at least one receiver, an error vector magnitude of at least one receiver, a channel matrix of at least one receiver, and/or a packet error rate of at least one of the receivers or transmitters of the transmission link, wherein the software processed by the processor implements a centralized configuration selection process that has knowledge of part or all communication and interference channels in the ad-hoc network and selects the antenna configuration that optimizes the sum capacity of the ad-hoc network, the sum throughput of the ad-hoc network, and/or the error rate of the ad-hoc network, and wherein optimizing the sum capacity of the ad-hoc network, the sum throughput of the ad-hoc network, and/or the error rate of the ad-hoc network comprises solving the following optimization problem: where c is an 1×2L vector that contains a configuration for all links l in the ad-hoc network, I denotes channel interference, σ 2 is noise power, P T /N T represents diagonal elements of a diagonal matrix, H lrc,ltc is a channel between a receiver of link l and a transmitter of link l for a receive configuration (rc) of link l and a transmit configuration (tc) of link l, H H lrc,ltc is a conjugate transpose of H lrc,ltc and R 1 is an interference plus noise covariance matrix for link l.