Abstract: A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the non-orthogonal pilot signal and subtracting them from the demodulated data signal.

Abstract: A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter.

Abstract: An antenna apparatus that can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements, each coupled to a respective signal control component such as a phase shifter. The phase shift for each antenna element is programmed for optimum reception during, for example, an idle mode when a pilot signal is received. The antenna array creates a beam former for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference. The phase shifters are adjusted in a coarse and a fine mode. In the coarse mode all phase shifters are jointly incremented through several phase shift values until a signal quality metric is optimized.

Abstract: A technique for a time division multiplex system in which access to shared broadcast communication media is granted on a demand basis. Particular connections are assigned slot times at the transmitter based on demand. However, no specific information regarding the assignment of time slots need be communicated to the receivers. The transmit side employs a forward error correction technique followed by multiplication by a cover sequence unique to each connection. All receivers listen to the broadcast transmission channel all of the time. The receiver assigned to each connection decodes the signals in such a manner that only the receiver with the correct cover sequence assigned to a particular connection will successfully decode the data associated with that connection. Data frames that fail the forward error correction process are discarded, and only those frames which are successfully decoded are passed up to a higher layer.

Abstract: A method for operating an access point in a wireless local area network (WLAN) is provided. The access point includes a directional antenna for communicating with a plurality of remote stations, and the directional antenna includes a plurality of antenna patterns. The method includes creating an antenna database by associating between the access point and each remote station a respective measured signal quality corresponding to the plurality of antenna patterns. The respective measured signal qualities are determined by the access point based upon communications with each remote station. The method further includes determining for each remote station a preferred antenna pattern based upon the antenna database, and selecting a remote station and the corresponding preferred antenna pattern to communicate with.

Abstract: A method for operating an access point in a wireless local area network (WLAN) is provided. The access point includes a directional antenna for communicating with a plurality of remote stations, and the directional antenna includes an omni angle and a plurality of directional angles. The method includes selecting one of the remote stations from the plurality of remote stations, transmitting a first probe signal via the omni angle of the directional antenna to the selected remote station, and measuring a first probe response signal received via the omni angle from the selected remote station responding to the first probe signal. A respective second probe signal is transmitted via each one of the plurality of directional angles of the directional antenna to the selected remote station, and a second probe response signal received via each directional angle from the selected remote station responding to the respective second probe signal is measured.

Abstract: A method for operating an access point in a wireless local area network (WLAN) is provided. The access point includes a directional antenna for communicating with at least one remote station in a forward link based upon an exchange of packet data comprising a plurality of control frames and a data frame. The directional antenna includes a plurality of antenna patterns. The method includes receiving a first control frame via a first antenna pattern of the directional antenna from the remote station, transmitting a first data frame to the remote station, and receiving a second control frame via a second antenna pattern of the directional antenna from the remote station. A signal quality of the first control frame received via the first antenna pattern and a signal quality of the second control frame received via the second antenna pattern are measured. The respective measured signal qualities associated with the first and second antenna patterns are compared.

Abstract: A method for operating an access point in a wireless local area network is provided, wherein the access point includes a directional antenna for communicating with at least one remote station. The method includes communicating with a selected remote station using a current angle of the directional antenna, and scanning an alternate angle from a plurality of alternate angles of the directional antenna for communicating with the selected remote station. Respective signals received via the current angle and the alternate angle from the selected remote station are measured. The current angle or the alternate angle is selected as a preferred angle based upon the measured signals for continuing communications with the selected remote station.

Abstract: A single, common correlation filter (CF) core is provided in a wireless system using CDMA. A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1, tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by digital signal processor (DSP). A user-unique code, such as a PN code, is applied to the information being transmitted in the channels of the wireless system. The information is QPSK modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the smallest data rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code to the correlation filter core.

Abstract: A fall arrest platform includes a platform cooperable with a lifting vehicle and having a floor, safety rails surrounding a perimeter of the floor, and an entrance gate in the side rails. A fall arrest system is integrated with the platform and includes a lanyard securable at one end to a user's harness, a lanyard connection securably receiving an opposite end of the lanyard, and mounting structure secured to the platform that supports the lanyard connection. The mounting structure movably supports the lanyard connection such that the user can move about a periphery of the platform. A compressed air accessory provides additional functionality and convenience. With this platform, a lift machine can be provided with the ability to access elevated surfaces and can also enable a safe work area outside of the machine platform.

Abstract: Methods of increasing the cellular pool of A-CoA and thus driving the metabolic pathways in the direction of A-CoA containing metabolites by overexpressing rate limiting enzymes in A-CoA synthesis. Methods of increasing intracellular levels of CoA and A-CoA through genetic engineering of bacterial strains in conjunction with supplementation with precursor molecules.

Abstract: A method of assembling large DNA fragments in a chromosome using site specific recombinases and alternating excisionases. The method may be performed in vitro or in vivo, but larger assemblies are possible when the assembly is performed in vivo. For an in vivo assembly, the cell must be engineered to contain the desired recombinases, each in an inducible construct so that the desired recombinase can be expressed at the correct time with the correct choice of inducing agent.

Abstract: A fall arrest platform includes a platform cooperable with a lifting vehicle and having a floor, safety rails surrounding a perimeter of the floor, and an entrance gate in the side rails. A fall arrest system is integrated with the platform and includes a lanyard securable at one end to a user's harness, a lanyard connection securably receiving an opposite end of the lanyard, and mounting structure secured to the platform that supports the lanyard connection. The mounting structure movably supports the lanyard connection such that the user can move about a periphery of the platform. A compressed air accessory provides additional functionality and convenience. With this platform, a lift machine can be provided with the ability to access elevated surfaces and can also enable a safe work area outside of the machine platform.

Abstract: A method and related apparatus for cleansing or killing bacteria from raw oysters. The method involves exposing the meat, and possibly some natural fluids, of shucked oysters to high strength electric fields to cleanse or kill the bacteria present in and on the oyster. An apparatus to perform the method involves a sterilization tank made in part of two conductive plates spaced about one centimeter apart. The meat of shucked oysters is placed between the plates. A large voltage from energy-storing capacitors is applied to the conductive plates to create the electric field that kills the bacteria in the stomach and other cavities, and on the meat of the shucked oysters.

Abstract: An automated actuation device for releasing items within a confined space, particularly an automated pickup head and gripping plate assembly which is used to grip egg cartons or trays and place those egg cartons or trays in stacks in a shipping container or basket. The actuation device includes a pickup head which may be mounted on any known or conventional apparatus for moving and orienting the pickup head and gripping plates to grasp individual items such as, e.g., egg cartons or trays, and to transfer those items to, and insert those items within, a confined space such as, e.g., a shipping container or basket.

Abstract: A movable barrier wall system includes a housing assembly 12 that has an interior chamber 32. A barrier member 14 is made of a buoyant material having a selected density. The barrier member 14 floats vertically within the chamber 32 when a liquid is present. The barrier member 14 may be made from a closed cell foam core 34 that is clad with a fiberglass mesh material then the assembly is infused with a resin material. Alternatively, the core 34 may be made from a plurality of elongated rods 38 that are individually clad and reinforced with a shear layer. The individual barrier member modules 15 may be assembled in an end to end relationship with an elongated vertical seal member therebetween. The barrier member 14 may be selectively raised prior to and in anticipation of a flood situation of a nearby body of water by a pump and control system that may be automatically or manually controlled. At least one passive backup system is provided for filling the chamber when the pump or control system fails.

Abstract: An automated actuation device for releasing items within a confined space, particularly an automated pickup head and gripping plate assembly which is used to grip egg cartons or trays and place those egg cartons or trays in stacks in a shipping container or basket. The actuation device includes a pickup head which may be mounted on any known or conventional apparatus for moving and orienting the pickup head and gripping plates to grasp individual items such as, e.g., egg cartons or trays, and to transfer those items to, and insert those items within, a confined space such as, e.g., a shipping container or basket. Mounted on the actuation device is a pickup head and gripping plate assembly. This assembly is actuated by an air cylinder connected to the assembly by a spider arm and an actuating bar. The gripping plate itself is connected to the pickup head by a first link and a second link.

Abstract: An automated device for releasing items within a confined space, particularly an automated pickup head which is used to grip egg cartons or trays and place those egg cartons or trays in stacks in a shipping container or basket. The device includes a pickup head which may be mounted on any known or conventional apparatus for moving and orienting the pickup head to grasp individual items such as, e.g., egg cartons or trays and to transfer those items to, and insert those items within, a confined space such as, e.g., a shipping container or basket. Mounted on the pickup head is an actuation device such as, e.g., two air cylinders, each having one end connected to the pickup head and another end connected to a first link. The first links are pivotally mounted on the pickup head, and are pivotally attached at one end to an upper end of a gripping finger. A biasing element biases the gripping fingers to an open position.

Abstract: An apparatus for conveying, cleaning, drying, oiling, candling, grading and packing eggs and high speeds. A main conveyor assembly, which includes two or more conveyors, transfers eggs continuously in spaced-apart, aligned relationship to transfer at which eggs are packaged according to their previously-determined individual physical characteristics, such as weight, cracks, dirt, etc. The conveyors can run in the same direction, or may run in opposite directions. The transfers accommodate the at least two conveyors, and include a section which gathers ejected eggs and may convey them to a packing station in a manner which prevents egg collisions. The eject mechanism for ejecting eggs from the conveyors ensures proper distribution of the eggs across a transfer so as to prevent egg collisions and to ensure that the packers are filled equally across their widths.

Abstract: To prevent so-called "clip-on" fraud from occurring at a public telephone station, such as a coin operated public telephone, a unique signature identifier is transmitted at the telephone following the transmission of the dialed number. If remote equipment determines that the expected identifier is not correct, or it fails to receive the signature, then the remote equipment terminates the call. Once the call is completed, then the public telephone is expected to periodically transmits a second identifier. The completed call may also be terminated if the remote equipment does not receive the expected second identifier at an expected rate or if a received second identifier is not correct.