Estimating time delays in a simulcast communication system
AssigneeM/A-Com, Inc.
InventorMac Hartless
Life of this patent
Estimating the term…
Abstract
A method for facilitating an equalization of a simulcast signal comprising: (a) receiving a simulcast signal comprising known data simulcast from at least two different sites; (b) generating a number of simulated simulcast signals, each simulated simulcast signal being based on at least two sites transmitting said known data with a presumed time delay, each simulated simulcast signal having a different presumed time delay; (c) determining which of said simulated simulcast signals is an optimum simulated simulcast signal that correlates most closely to said simulcast signal; and (d) providing time delay data of said optimum simulated simulcast signal for use in equalization of said simulcast signal.
Claims18
A method for equalizing a number of signals in a simulcast network, said method comprising:
- (a) receiving a simulcast signal comprising known data simulcast from at least two different sites;
- (b) generating a number of simulated simulcast signals, each simulated simulcast signal being based on at least two sites transmitting said known data with a presumed time delay, each simulated simulcast signal having a different presumed time delay;
- (c) determining which of said simulated simulcast signals is an optimum simulated simulcast signal that correlates most closely to said simulcast signal;
- and
- (d) providing time delay data of said optimum simulated simulcast signal for use in equalization of said simulcast signal.
The method of claim 13, wherein a coarsely-incremented time delay is 5 to 20 times a finely-incremented time delays.
A mobile unit for use in a simulcast network comprising:
- a receiver for receiving a simulcast signal;
- a transmitter for transmitting a signal to a simulcast network;
- a processor operatively connected to said receiver and said transmitter;
- and
- memory operatively connector to said processor and being configured to instruct said process to perform the following steps:
- (a) receiving a simulcast signal comprising known data simulcast from at least two different sites;
- (b) generating a number of simulated simulcast signals, each simulated simulcast signal being based on at least two sites transmitting said known data with a presumed time delay, each simulated simulcast signal having a different presumed time delay;
- (c) determining which of said simulated simulcast signals is an optimum simulated simulcast signal that correlates most closely to said simulcast signal;
- and
- (d) providing time delay data of said optimum simulated simulcast signal for use in equalization of said simulcast signal.
A simulcast network comprising:
- at least two sites for simulcasting a signal having known data
- a mobile unit positionable between said two sites such that a simulcast signal received from said two sites has a time delay, and comprising:
- a receiver for receiving a simulcast signal;
- a transmitter for transmitting a signal to a simulcast network;
- a processor operatively connected to said receiver and said transmitter;
- and
- memory operatively connector to said processor and being configured to instruct said process to perform the following steps:
- (a) receiving a simulcast signal comprising known data simulcast from at least two different sites;
- (b) generating a number of simulated simulcast signals, each simulated simulcast signal being based on at least two sites transmitting said known data with a presumed time delay, each simulated simulcast signal having a different presumed time delay;
- (c) determining which of said simulated simulcast signals is an optimum simulated simulcast signal that correlates most closely to said simulcast signal;
- and
- (d) providing time delay data of said optimum simulated simulcast signal for use an equalization of said simulcast signal.
Dependencies are inferred from the claim text.