Abstract: A complex spreading and/or scrambling code sequence generation system uses a first complex code sequence having at least two components and a second complex code sequence having at least two components. The components of the first complex code sequence are respectively mixed with the corresponding components of the second complex code sequence to generate the complex scrambling code sequence. In doing so, an offset between the components of the complex scrambling code sequence is achieved for the same and/or different users. The complex scrambling code sequence can be used for spreading, scrambling, de-spreading or descrambling an information signal.

Abstract: In order to transparently redirect an HTTP connection request that is directed to an origin server (107) to a proxy cache (110-1), a proxy redirector (104) translates the destination address of packets directed to the origin server to the address of the proxy. During a handshaking procedure, a TCP connection is transparently established between the client (110-1) and the proxy cache. When the client transmits a GET request to what it thinks is the origin server, which request specifies the complete address of an object at that origin server that it wants a copy of, the proxy redirector modifies the complete address specified in that GET request before it is sent to the proxy cache. Specifically, the IP address of the origin server found in the destination field in the IP header of the one or more packets from the client containing the GET request is added by the proxy redirector as a prefix to the complete URL in the GET request to form an absolute URL.

Abstract: A system and a method for code division multiple access (CDMA) communication. The system includes fixed terminals communicating with a central base station. The terminals in protection sectors of each sector are configured to employ codes from different sets of codes to overcome potential mutual interference between sectors on account of antenna radiation pattern roll-off. The remaining codes, preferably the majority of the available codes, are used in any one of a plurality of basic sectors, each of which separates the protection sectors of a respective sector. For an even number of sectors in a cell, the available codes are partitioned into three groups, two for the protection sectors and one for the basic sectors. For an odd number of sectors in a cell, the available codes are partitioned into four groups, three for the protection sectors and one for the basic sectors. Protection sectors are relatively narrow but broad enough to counteract the potential mutual interference between sectors.

Abstract: A caching device comprises a disk cache that stores web objects. Each web object stored in disk cache is stored in contiguous storage space locations in the disk cache. Each pair of temporally successive web objects stored in the disk cache are stored in substantially sequential storage space locations in the disk cache.

Abstract: A remote control system uses a state signal that indicates whether a door or lock is opening, open, closing or closed. The state signal that indicates whether a door or lock is opening, open, closing or closed is transmitted. The remote control device receives the state signal, while the remote control device is proximate to the door or lock. The received state signal is stored in the remote control device. An alarm signal is generated, if the state signal is not received by the remote control device, and the stored state signal indicates that the door or lock is opening or open. The system may be used to monitor and control an automatic garage door opener, a power door locking system in an automobile, a trunk locking system in an automobile, or door or window locking systems in a building.

Abstract: A system and method is provided having an adaptive channel coder and modulator, a channel decoder and demodulator connected to the adaptive channel coder and modulator, and a radio link protocol frame and channel decision unit connected to the adaptive channel coder and modulator.

Abstract: A method downsamples characters in a document by font substitution when the characters in the document are identified with sufficient reliability. Otherwise, the characters are downsampled by decimation. The method also allows downsampling by applying characters to a two-dimensional nonlinear filter and decimating.

Abstract: A method and apparatus for equalizing a signal to accurately deconvolute the channel includes deriving a functional relationship between Doppler frequency and variance between the instantaneous energy of the received signal and the mean energy of the received signal. Theoretical values of Doppler frequency for a range of values of variance are mapped based on the derived functional relationship. The variance of a received signal is determined and the corresponding Doppler frequency estimate selected from the map. Optimal equalization learning parameters are then selected based on the corresponding Doppler frequency estimate so that the received signal may be deconvoluted independent of the impact of Doppler frequency.

Abstract: A solution to a problem of false positives in frame synchronization in telecommunication systems involves generating a separate channel estimate based only on the non-SW (all −1) bits of a pilot sequence. This non-SW channel estimate is used to correct received pilot SW symbols. These specially corrected symbols are rake combined separately from other symbols. The result is used exclusively for the frame synchronization detector. Normal channel estimate calculations and rake combining proceeds as usual. This method of frame synchronization only refers to SW bit matches. False positives are decreased using the invention.

Abstract: A frequency offset estimation is generated without explicitly generating a channel estimation for a frequency selective fading communication channel. This is realized by recognizing that, in the absence of additive noise, the channel output at a time n depends only on the last previous predetermined number, L, of data symbols, and that a “state” is a sequence of the last L symbols. Specifically, in a receiver, a received signal is mixed with a locally generated frequency corresponding to a frequency offset to generate a mixed signal. A calculation is made on the mixed signal in which channel outputs of the same state are combined and accumulated. Then, a summation is made over all possible states of the combined and accumulated channel outputs to yield a so-called metric calculation value for that mixed signal. The metric calculation is then repeated for a plurality of different locally generated frequencies corresponding on a one-to-one basis with a plurality of frequency offsets.

Abstract: A method and apparatus for establishing calls initiated by an initial call attempt request to permit the characteristics of call connections established in response to the ICA request to be controlled by translation information of a defining port. The defining port can be a real port of a switch, or a pseudo port having associated therewith a block of translation information, but no physical network equipment. Among the characteristics that can be controlled are a billing number of the call, and a routing plan for determining a route based on destination information specified in the ICA request, and the line or trunk features offered in the switch. Advantageously, the characteristics of the ICA request connection can be specified by translation information instead of being inflexibly tied to the pre-defined standard characteristics.

Abstract: A selective Global Service Redirection mechanism allows a service provider, for instance, to instruct only CDMA2000 (MOB_P_REV=6) mobiles to access specific carrier that is deployed to support advanced services known as 3G services. In another embodiment, data-only CDMA2000 mobiles are instructed to access specific carrier that is optimized to support high speed data services. Additionally, data-only CDMA2000 mobiles may be instructed to access a specific carrier that is optimized to support high speed data services. Pre-CDMA2000 mobiles (MOB_P_REV<6) are redirected by a conventional Global Service Redirection Message to another carrier, while CDMA2000 mobiles (MOB_P_REV=>6) are instructed to ignore this redirection.

Abstract: A controller and a method for controlling the amount of loss in signal paths of a communication system are disclosed. The method includes sampling the impulse response of an echo cancelling circuit, detecting an abnormal signal condition by comparing the impulse response to a reference, and inserting loss into a first signal path when an abnormal signal condition is detected. One controller configuration for adjusting the amount of loss in the signal paths of a communication system has an adjustable attenuator in the signal path having a control signal input, a memory element which stores a reference, and a comparator having one input connected to the memory of the echo canceler circuit which samples the impulse response, another input connected to the memory which stores the reference, and an output connected to the control signal input of the attenuator.

Abstract: A high speed digital signal connection interface with reduced cross talk includes a multiple pin connector with disconnectable header and receptacle portions. The header is attached to a first set of signal carrying wire pairs communicating with a first signal processing unit. The receptacle is attached to a second set of signal carrying wire pairs communicating with a second signal processing unit. Within each of the first and second wire pair sets is a first wire pair subset carrying digital signals travelling in a first direction between the signal processing units, and a second wire pair subset carrying digital signals travelling in a second direction between the signal processing units. The first and second wire pair sets are attached to the corrector such that adjacent pin pairs of the connector carry only signals travelling in the same direction and such that connector pin pairs carrying signals travelling in opposite directions are not adjacent to each other.

Abstract: In an optical fiber transmission system, higher order PMD compensation is realized at the output of the transmission fiber. A compensator is placed at the output of the transmission fiber whose PMD vector is equal in magnitude and opposite in direction to the PMD vector at the output of the transmission fiber. The compensator PMD vector sweeps at a rate that matches the frequency sweep rate of the PMD vector at the fiber output. To compensate for second order PMD while avoiding the introduction of higher order PMD effects, a planar sweep is advantageously employed. A polarization pair controller is employed in advance of the compensator to align the PMD vector at the compensator input with the PMD vector at the fiber output so that the two cancel as well as to align the rotational axis of the compensator PMD vector with the rotational axis of the fiber PMD vector. The system may also include a monitoring device to monitor the compensation of fiber PMD, to determine the need for adjustments to the system.

Abstract: In an optical fiber transmission system, higher order PMD compensation is realized with a sweeper device at the input to the fiber which converts the polarization of the light beam into a frequency dependent polarization whose rate of change is similar to the rate of change of one of the PSPs of the fiber. The frequency dependent polarization of the light beam is then aligned with one of the frequency-dependent PSPs at the input of the fiber. Furthermore, differential group delay dispersion for a given frequency can be reduced by employing a chromatic dispersion compensator prior to the receiver end of the fiber transmission system. Control of the polarization of the light beam can be facilitated by monitoring PMD in the system, or alternatively, monitoring an effect of PMD in the system, such as bit error rates.

Abstract: A chip synchronization composite code match filter and a frame synchronization composite code match filter are disclosed and respectively serve as the first and second stages of a mobile terminal which also has a third stage for providing a scrambling code identification function. These three stages complete the acquisition function for the mobile terminal. The mobile terminal is particularly suited for operational interaction in the Third Generation Partnership Project (3GPP) Standard. Both the chip synchronization and frame synchronization composite code match filters utilize the hierarchial structure of the Golay code in a manner so as to reduce the components needed to accomplish the chip and frame synchronization functions for the mobile terminal operating within the 3GPP standards.

Abstract: A system and methods are provided for collecting, analyzing, and reporting data supplied on the report data stream of an electronic switching system or other generator of a report or log data stream or file. Local data storage facilities are provided to receive and store report data stream information for one or more switches. A centralized data storage and analysis facility receives the data collected by the local facilities. A parser parses the collected report data to select and reformat report items of interest according to predefined selection triggers. A post processing facility includes pattern identification and pattern classification components. The pattern identification component reads the parsed, selected report items and extracts a pattern comprising the selection triggers and function call addresses associated with each event. The pattern classification component determines whether the identified pattern for each event is old or newly encountered.

Abstract: Methods and communication networks having a plurality of connection-oriented switches in which administrative weights are assigned based on link call blocking probabilities. Three assignment schemes include, first, a solution that can be built in the switch software of sufficiently similar switches to enable the switches to determine administrative weights for their links. The second and third schemes employ administrative weight management stations. The second scheme uses an administrative weight management station that operates to enhance total network revenue or throughput in a communication network in which all of the switches implement a certain type of accounting management information databases (MIB). The third scheme uses an administrative weight management station that computes administrative weights for switches that do not have the capability for the second scheme, but which employ appropriate MIBs.

Abstract: A fiber Raman amplifier is configured to use a co-propagating Raman pump source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump source characteristics, sufficient optical gain can be achieved in the co-propagating arrangement, the characteristics including: (1) using an optical pump power of at least 50 mW, (2) having a relatively large spectral bandwidth within the pump (to suppress SBS); and (3) a frequency difference between all longitudinal pump modes of each pump laser being separated by at least the walk-off frequency between the pump laser frequency and the signal frequency, and all intense longitudinal modes between different pump lasers being separated by at least the electrical bandwidth of the communication system.