Patent ID: 9198056
Filing Date: 2015-11-24
Classification: H04L,H04W

Abstract:
1. A method of optimizing the distribution of a broadband wireless signal in a building comprising: inserting at least one antenna into a building ventilation system associated with a building; transmitting a wireless broadband signal from a transmitter in communication with the antenna, the wireless broadband signal comprising multiple orthogonal subcarriers; detecting the wireless broadband signal with a receiver; analyzing a parameter of the detected wireless broadband signal; estimating a signal propagation characteristic for a modeled transmission line between the antenna and at least one receiver, the modeled transmission line comprising a duct, an opening in the duct and free air between the opening and the at least one receiver, wherein the estimated signal propagation characteristic comprises an estimate of the coherence bandwidth of the modeled transmission line and wherein the coherence bandwidth of the modeled transmission line is estimated by computing a total multipath delay spread from a duct delay spread, an opening delay spread and a free air delay spread; and optimizing the wireless broadband signal by assigning a subcarrier allocation based at least in part upon the analyzed parameter and the estimated signal propagation characteristic.