Abstract:
A phase lock loop of a synthesizer (143) is controlled by applying (506) modern optimal control techniques for a predetermined period in a computing engine (222), in response to an error being introduced into a signal of the phase lock loop, and by utilizing (510) classical control techniques for controlling the phase lock loop after the predetermined period.
Abstract:
A multilayered ceramic integrated sensor (200) for monitoring auto exhaust gases is capable of existing in the relatively harsh environments of the exhaust stream of an internal combustion engine. The integrated sensor (200) may include discrete devices such as an oxygen sensor (104), a hydrogen sensor (206), an NOx sensor (208), and a carbon monoxide sensor (210). The device (200) may further include a temperature sensor (202) as well as a total combustion calorimetric sensor (101). The multilayered ceramic integrated sensor may be fabricated from a plurality of layers of ceramic material disposed in stacked relationship with respect to one another.
Abstract:
Handoff from a Code-Division, Multiple Access (CDMA) protocol to an Advanced Mobile Phone Service (AMPS) protocol occurs by comparing a remote unit's (405) phase shift measurement to a threshold (503) and determining a reference CDMA base station (401) from an active set of CDMA base stations (515). Next, corrected phase shifts are calculated for each CDMA base station in the active set (521) and the remote unit (405) is handed off to an AMPS base station (109) underlying the CDMA coverage area (126) having the smallest corrected phase shift (525).
Abstract:
An electrochemical cell (10) includes first and second electrodes (12 and 14) with an electrolyte system (26) disposed therebetween. The electrolyte system includes at least a first and second layer (28 and 30), the second layer (30) being used to absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte (26). The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.
Abstract:
An apparatus for use in a receiver (100) of a wireless communication system is provided. The apparatus comprises a first filter (340) having a first cutoff frequency, a second filter (350) having a second cutoff frequency, a first data bit estimator (360) coupled to the first filter (340), a second data bit estimator (361) coupled to the second filter (350), a third data bit estimator (363), and decision logic (370) dynamically selecting one of the first and second filters based on a first bit count from the first data bit estimator (360), a second bit count from the second data bit estimator (361), and a third bit count from the third data bit estimator (363).
Abstract:
The method includes representing (72) first (12) and second (14) signal transmission sources in a memory (50), the first signal transmission source (12) having a first set (45) of signal radiation patterns and the second signal transmission source (14) having a second set (45) of signal radiation patterns. One signal radiation pattern (40, 42, 44) for transmission of a frequency is selected (74, 76) from both the first set and the second set of signal radiation patterns. A power value of the frequency is determined (78) at a point within the wireless communication system (10), and the determined power level of the frequency is compared (80) with a desired power level of the frequency. After the comparison, another signal radiation pattern (40, 42, 44) is automatically selected (82) for transmission of the frequency from one of the first set (45) and the second set (45) of signal radiation patterns.
Abstract:
A simulator/controller (113) performs real-time simulation for system control in a code-division multiple access (CDMA) wireless communication system (100). The simulator/controller (113) simulates the effects of interfering AMPS wireless communication systems which coexist with CDMA wireless communication systems and also aids in the placement of new CDMA base-stations in the presence of existing AMPS base-stations. When system parameters are input to the simulator/controller (113), real-time simulation of the CDMA wireless communication system (100) predicts potential problem areas of the CDMA wireless communication system (100) and controls the CDMA wireless communication system (100) to avoid the problems before they occur.
Abstract:
The present invention provides a system for a method, system (300), subscriber unit (320, 330), and base/headend unit (310) for a bandwidth efficient multiple user digital communication system (300) that facilitates multiple user reverse link communication using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330). Overlap bandwidth subscriber units (320, 330) receive a forward link signal, each deriving a frequency reference from the forward link signal and a symbol timing reference from the forward link signal, and transmitting a reverse link signal to the base/headend unit (310) that receives a composite reverse link signal of the reverse link signals. Each reverse link signal includes at least one modulated data carrier with distinct carrier frequencies. Each transmitted reverse link signal has a symbol timing responsive to the symbol timing reference, and the frequency spectra of the reverse link signals overlap using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units (320, 330).
Abstract:
A communication system (100) for synchronizing implementation of configuration information includes a network manager (105) for transmitting the configuration information and communication devices (110, 115) coupled to the network manager (105) for receiving the configuration information and responding with confirmations indicating that the configuration information is acceptable. In response to receiving the confirmations, the network manager (105) provides to the communication devices (110, 115) an implementation time at which the communication devices (110, 115) begin to utilize the configuration information.
Abstract:
An information storage device that includes a memory (850) for storing a codeword recovered from a plurality of de-interleaved information blocks. The codeword is stored in a first memory region (1201) within the memory (850). In response to the codeword belonging to either a vector or message field set, a codeword identifier (852) examines the codeword and assigns a corresponding type identifier to the codeword. A memory controller (854) then stores the type identifier in a second memory region (1202) within the memory (850) corresponding with the codeword.