| CPC H04W 4/024 (2018.02) [H04W 4/029 (2018.02); H04W 4/38 (2018.02)] | 8 Claims |
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1. A non-transitory computer readable medium having instructions stored therein that, when executed by a microprocessor, causes the microprocessor to perform a method of obtaining estimates of channel characteristics for wireless communications, the method comprising:
receiving, from a mobile wireless agent, sensory information at N sample points in a sample space, S, of a physical sensing location, wherein coordinates of the N sample points are random variables over a wireless communication channel having unknown channel characteristics;
constructing a histogram, comprising N samples, from the coordinates of the random variables of the sensory information;
constructing a set of parameterized Rayleigh probability density functions, PDF, PX(xi,ξ) from the N samples of the histogram, where each x represents a set of coordinates in the sample space and ξ is a parameter vector containing a set of L parameters for each xi, where i=1, . . . , N;
constructing a parameterized vector, Ψ(ξ), from the set of the parameterized Rayleigh PDFs, PX(xi,ξ);
forming a transformation vector, ψ, from the histogram for each xi;
determining a distance, D(ξ), between the transformation vector, ψ, and the parameterized vector Ψ(ξ);
minimizing an absolute value of the distance, D(ξ);
forming a Jacobian matrix, Jξ, by calculating a partial derivative of the parameterized vector, Ψ(ξ), for each ξ;
calculating a dot product between a transpose of the Jacobian matrix, Jξ and the distance, D(ξ);
minimizing the dot product; and
determining a value of each parameter vector, ξ, which minimizes the dot product;
estimating a set of parameters of the unknown channel characteristics from each set of L parameters of each ξ;
generating motion actuation signals for the mobile wireless agent based on the estimated set of parameters, wherein the motion actuation signals include a navigation signal and a peripheral device control signal;
transmitting the motion actuation signals and the estimated set of parameters to a base station (BS); and
transmitting, by a BS communication circuitry, the motion actuation signals on the wireless communication channel using the estimated set of parameters of the channel characteristics, to the mobile wireless agent.
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