Abstract:
A computing device includes a processor and memory storing instructions that are executable to determine a median of a first mixture distribution. The instructions are also executable to determine a parent mean, a parent standard deviation, and boundaries for each of multiple segments in the first mixture distribution. The instructions are also executable to determine a segment mean and a segment second moment for each segment based on the parent mean, the parent standard deviation, and the boundaries for the respective segment. The instructions are also executable to determine a scaled probability for each segment. The instructions are also executable to determine a mixture mean and a mixture standard deviation for the first mixture distribution based on the segment mean, the segment second moment, and the scaled probability for each segment in the first mixture distribution.
Abstract:
A method for selecting a channel for a network element in a shared spectrum communication system is provided. The method comprises identifying a plurality of candidate channels of a frequency band of the shared spectrum communication system. For each of the plurality of candidate channels, the method further comprises determining at least one transmit power estimate based on at least one available interference margin. The at least one available interference margin is based on a power allocation protocol for the shared spectrum communication system. The method further comprises scoring each of the plurality of candidate channels based on the at least one transmit power estimate. The method further comprises ranking the plurality of candidate channels based on the scores for each of the plurality of candidate channels. The method further comprises selecting one of the plurality of candidate channels based on the ranking of the plurality of candidate channels.
Abstract:
Techniques for modelling a radio network in a geographic region utilizing shared spectra are disclosed. Population data is obtained for the geographic region. A number of radios per channel in the geographic region, N ', is determined. Candidate geographic location for radios in the geographic region are determined. For every channel in the shared spectra, at least one of a static dataset and a dynamic dataset is determined. At least one set of output data, that is a statistical characterization of the radio network, is generated using at least one of the static dataset and the dynamic dataset, to aid in design of the radio network.
Abstract:
In one embodiment, a method is provided. The method comprises determining a free space path loss distance at a frequency of a transmitter; determining a morphology class for a geographic location of the transmitter; determining a scaling factor P corresponding to the determined morphology class; determining a circular analysis region based upon the scaling factor P; and generating a contour.
Abstract:
In one embodiment, a method is provided. The method comprises defining propagation analysis points for radial line Rp; obtaining, from an external database, terrain elevation data for the radial line R p up to a maximum radial distance; determining the contour point for the radial line R p ; and upon determining the contour points for M radii, generating a protection zone perimeter.
Abstract:
A method of associating streams of baseband data with one or more antenna ports of a remote radio head (RRH) is provided. The method includes extracting streams of baseband data from a user-plane of front-haul data communicated to the RRH over a communication link, determining which, if any, layer mapping and precoding scheme and associated antenna port configuration was used to encode and modulate one or more of the extracted streams of baseband data, wherein each layer mapping and precoding scheme has one or more of associated antenna port configurations, each antenna port configuration associating each of one or more steams of baseband data with a respective antenna port of the RRH.
Abstract:
Techniques for determining power levels of radios, including a time domain duplexing (TDD) system, in shared frequency spectrum is provided. A TDD radio, of the TDD system, in a neighborhood having a largest interference contribution in the frequency spectrum at the point. Transmit power levels are determined for (a) the selected TDD radio, (b) other radios in the neighborhood that are not part of the TDD system, and (c) at least one radio in the TDD system that is not the TDD radio having the largest interference contribution in the frequency spectrum. Thus, interference margin may be fairly allocated to radios in neighborhood(s) about protection points.
Abstract:
Techniques are provided for more accurately determining interference contribution at a point in a neighborhood of a time division duplexing (TDD) system operating in shared frequency spectrum. If at least one TDD radio, of a TDD system, is in the neighborhood, then determine a largest interference level, at the point in the shared frequency spectrum, by a TDD radio of the TDD system, where the TDD radio is in the region around the point. The largest interference level is selected as the aggregate interference contribution of the TDD system for interference analysis in the shared spectrum at the point.
Abstract:
The present disclosure describes systems and methods for determining intermodulation distortion in a system such as, but not limited to, a communication system. In an embodiment, intermodulation distortion is determined by injecting a signal into a frequency band which interacts with a second signal, searching a second frequency band for a product signal formed from the first and second signals, applying a cyclostationarity detection technique to the product signal and identifying the product signal as an intermodulation distortion signal.