Current radio telecommunications cell radius estimation methods can result in spurious and inaccurate results outside regions with well sampled signal measurements. The present invention provides an improved cell radius estimation method using path loss and signal source distance data as well as a method for determining models for use in cell estimation without test data. The methods apply a fixed gradient line fit to the data to obtain cell radius estimates and to determine models for one or mo...

A method of estimating background noise in a signal. The signal is divided into blocks of equal predetermined length. The minimum energy of the signal during the length of each block is determined. The minimum energy determined for the current block is compared to a previous determination of minimum energy. If the current minimum energy exceeds a predetermined maximum energy level, the current block minimum energy is discarded and the previous determination remains unchanged. If the current bloc...

A method and apparatus is disclosed for recursively estimating vehicle mass and/or aerodynamic coefficient of a moving vehicle. The vehicle speed and push force data are collected and a segment of qualified data is then selected from the collected data. Newton's second law is integrated to express vehicle mass and/or aerodynamic coefficient in terms of vehicle push force and vehicle speed. This expression is then used in a recursive analysis of the qualified data segment to determine an estimate...

A method and apparatus is described which enables a user to analyze an electrical design utilizing a computer. The elements of the electrical design are described at a register transfer level. Embodiments of the invention are described which allow the user to enter the elements described at the register transfer level and estimate the power consumption of portions or all of the electrical design.

Video signals are encoded (FIG. 5) using motion compensated prediction which operates on a transform domain representation of the signal. The displacement estimate used for compensation is recursively updated, so that a feedback path exists between the output (205) of the displacement calculator and one of its output (209). The update term is also computed in the transform domain. A decoder (FIG. 6) uses the same prediction technique to recover the original picture.

A scheme for identifying usable carriers for a particular modulation type and selecting, if possible, a modulation type for modulation of OFDM symbol block associated with data packets in a standard transmission mode based on data channel conditions. Channel estimation for an OFDM symbol block received by a receiving network node over a data channel during a packet transmission by a transmitting network node generates information indicative of noise events on symbols and carriers in the OFDM blo...

Method and system for estimating processing time delay .DELTA.t.sub.d of a selected signal processing device and temperature T of the device. A selected input signal is received by a first sub-system that includes the selected device and by a second sub-system having a controllable time delay, producing first and second sub-system output signals. The first and second sub-system output signals are compared to estimate the time delay of the selected device. A known relationship T=f(.DELTA.t.sub.d)...

A method and apparatus for estimating channel impulse response and data in a signal transmitted over a channel in a communication system. The channel impulse response is estimated uses correlative channel sounding, and then, using the estimated channel impulse response, the data in the signal is estimated. The output is then fed back to the channel impulse response estimator and the channel impulse estimation is repeated. The data estimation and channel impulse response estimation may be iterate...

A system for locating a number of devices (112-130) by measuring signals transmitted between known location devices (112-118, 134-138, 214-218, 224-228) and unknown location devices (120-130, 222), and signals transmitted between pairs of unknown location devices (120-130,222), entering signal measurements into a graph function that includes a number of first sub-expressions, a number of which include signal measurement prediction sub-expressions, and have extrema when a predicted signal measure...

Motion correlation is a way of analyzing movement in image sequences such as television signals. The estimation of movement in television pictures is essential to enable the use of motion compensated processing techniques. These techniques yield improved quality video processing and moving image compression. Motion correlation would be used as part of a video motion estimation system. This invention describes a number of enhancements to, and a simplfied, efficient implementation of, the basic mo...