Abstract: A highly integrated and low-cost reader for a radio frequency identification (RFID) system is realized by providing a transmitter operable to generate an outbound radio frequency (RF) signal and a receiver operable to receive an inbound RF signal having a frequency similar to a frequency of the outbound RF signal on a single integrated circuit. Since the inbound RF signal may include not only a modulated RF signal produced by an RFID tag responsive to the outbound RF signal, but also a blocking signal corresponding to the outbound RF signal, the receiver additionally includes a block cancellation module operable to substantially cancel the blocking signal from the inbound RF signal using the outbound RF signal and to substantially pass the modulated RF signal before down-conversion of the modulated RF signal.

Abstract: A wireless communication device is provided with both a transceiver and a low-cost RFID reader. The RFID reader is operable to generate a first outbound radio frequency (RF) signal from first outbound data, to receive a first inbound RF signal responsive to the outbound RF signal and to convert the first inbound RF signal into inbound RFID digital data. The transceiver is operable to generate a second outbound radio frequency (RF) signal, to receive a second inbound RF signal and to convert the second inbound RF signal into inbound transceiver data.

Abstract: A transceiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module operably coupled to generate outbound non-amplitude modulated symbols from first outbound data, to generate outbound amplitude modulated symbols from second outbound data, to generate first inbound data from inbound non-amplitude modulated symbols, and to generate second inbound data from inbound amplitude modulated symbols, a combiner operably coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal and a splitter operably coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.

Abstract: An integrated RFID reader and wireless communication device is realized by a radio frequency (RF) front end operable, in a first mode, to generate a radio frequency identification system (RFID) outbound radio frequency (RF) signal, to receive an RFID inbound RF signal responsive to the RFID outbound RF signal and to convert the RFID inbound RF signal to an RFID near baseband signal, and operable in a second mode, to generate a transceiver outbound radio frequency (RF) signal, to receive a transceiver inbound RF signal and to convert the transceiver inbound RF signal to a transceiver near baseband signal.

Abstract: An infrastructure that supports both Voice over Internet Protocol (VoIP) telephony via the Internet and Public Switched Telephone Network (PSTN) telephony via the PSTN. A plurality of client telephony bridging devices communicatively couple to both the Internet and to the PSTN and are operable to bridge calls between the Internet and the PSTN. Server processing circuitry communicatively couples to the plurality of client telephony bridging devices and is operable to receive a voice call setup request from a calling voice terminal via the Internet or PSTN. The server processing circuitry is operable to select a servicing telephony bridging device from the plurality of client telephony bridging devices. The servicing client telephony bridging device is operable to bridge an incoming call for the calling voice terminal between the Internet and the PSTN.

Abstract: A method for compensating a power amplifier based on operational-based changes begins by measuring one of a plurality of operational parameters of the power amplifier to produce a measured operational parameter. The method continues by comparing the measured operational parameter with a corresponding one of a plurality of desired operational parameter settings. The method continues by, when the comparing of the measured operational parameter with the corresponding one of a plurality of desired operational parameter settings is unfavorable, determining a difference between the measured operational parameter and the corresponding one of a plurality of desired operational parameter settings. The method continues by calibrating the one of the plurality of operational settings based on the difference.

Abstract: A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain.

Abstract: A Space Time Transmit Diversity (STTD) Decoder includes a physical channel despreader, a delay buffer, an upper processing branch, a lower processing branch and a combiner. The upper processing branch is operable to apply a conjugate of a first channel estimate to the delay buffer symbol output and produce non STTD encoded symbols. The lower processing branch is operable to read delayed delay buffer symbol outputs and apply a conjugate of a second channel estimate when active in the STTD mode. The lower processing branch then may apply an STTD decoder scheme to the delay buffer symbol output to produce non STTD encoded symbols. The combiner then combines the non STTD encoded symbols of the upper processing branch and non STTD encoded symbols of the lower processing branch to produce a single set of non STTD encoded symbols.

Abstract: An HSDPA rake receiver has a plurality of rake fingers. Different channels may experience different spreading factors. The channel estimate (CE) and the CE delay may be affected and depend on the spreading factor. The CE delay is related to the individual rake finger output buffer size. According to the structure of the present invention, an adaptive channel estimate delay that depends on the spreading factor may result in improved performance.

Abstract: A method for receiving data from a plurality of virtual channels begins by storing a stream of data as a plurality of data segments, wherein the stream of data includes multiplexed data fragments from at least one of the plurality of virtual channels, and wherein a data segment of the plurality of data segments corresponds to one of the multiplexed data fragments. The method continues by decoding at least one of the plurality of data segments in accordance with one of a plurality of data transmission protocols to produce at least one decoded data segment. The method continues by storing the at least one decoded data segment, in a generic format, to reassemble at least a portion of a packet provided by the at least one of the plurality of virtual channels. The method continues by routing the at least one decoded data segment as at least part of the reassembled packet to one of a plurality of destinations in accordance with the at least one of the plurality of virtual channels.

Abstract: A radio frequency integrated circuit (RFIC) includes a die and a package. The die includes a radio frequency (RF) input/output (I/O) section, an RF to baseband conversion section, and a baseband processing section. The package includes a ball grid array and an antenna. The antenna is located on one edge of the package and the solder balls of the ball grid array proximal to the antenna are used to couple the RF I/O section of the die to the antenna.

Abstract: An auxiliary bridging device operates within infrastructure that includes a packet data network (Internet) and the Public Switched Telephone Network (PSTN) telephony network and supports a coupled POTS telephony device. The auxiliary bridging device is operable to bridge calls between every two of the POTS telephony device, the PSTN network, and the packet data network (Internet). The auxiliary bridging device selectively bridges incoming calls to the POTS telephony device, to remote PSTN terminals, and to remote VoIP terminals based upon telephony bridging instructions. These telephony bridging instructions may be stored locally or remotely.

Abstract: A telephony bridging device operates within infrastructure that includes a packet data network (Internet) and the Public Switched Telephone Network (PSTN) telephony network and supports a coupled POTS telephony device. The telephony bridging device is operable to bridge calls between every two of the POTS telephony device, the PSTN network, and the packet data network (Internet). The telephony bridging device selectively bridges incoming calls to the POTS telephony device, to remote PSTN terminals, and to remote VoIP terminals based upon telephony bridging instructions. These telephony bridging instructions may be stored locally or remotely.

Abstract: Servicing an incoming Facsimile (FAX) communication includes receiving the incoming FAX communication by a source telephony bridging device via a source PSTN connection, the incoming FAX communication having an incoming FAX number associated therewith. Based upon the incoming FAX number, the source telephony bridging device determines a user ID in a peer-to-peer Voice over Internet Protocol (VOIP) network, determines an Internet Protocol (IP) address of a destination telephony bridging device based upon the user ID in the peer-to-peer VoIP network, and determines an outgoing FAX number based upon the user ID in the peer-to-peer VoIP network. The source telephony bridging device, an intermediate packet data network, and the destination telephony bridging device bridge the FAX communication from the source PSTN connection to a destination PSTN connection, the FAX communication directed to the outgoing FAX number.

Abstract: An infrastructure that supports both Voice over Internet Protocol (VoIP) telephony via the Internet and Public Switched Telephone Network (PSTN) telephony via the PSTN includes a plurality of client telephony bridging devices communicatively couple to both the Internet and to the PSTN that are operable to bridge calls between the Internet and the PSTN. Server processing circuitry distributed among the plurality of client telephony bridging devices is operable to setup call bridging, to service call bridging, and to track subscribers to the system. In setting up call bridging, the distributed server processing circuitry services a call setup request from a calling voice terminal via the Internet or PSTN. The distributed server processing circuitry is operable to select a servicing telephony bridging device from the plurality of client telephony bridging devices and to enable bridging by such device(s).

Abstract: A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter having a first bandwidth to produce a first stage output signal. Then the first stage output signal is filtered with a second stage filter having a second bandwidth narrower than that of the first stage filter to produce a multi-stage output signal. A comparison between first stage performance measurements and multi-stage performance measurements determine the mode of operation of the adaptive multistage filter. A first mode of operation, selected when the first stage performance measurement compares favorably with the second stage performance measurement, selects the output of the first stage filter as the output of the multi-stage filter. Otherwise, a second mode of operation selects the output of the second stage filter as the output of the multi-stage filter.

Abstract: A Radio Frequency (RF) transceiver Integrated Circuit (IC) includes a plurality -of RF transceivers, local oscillation generation circuitry that produces a local oscillation, and local oscillation distribution circuitry. The local oscillation distribution circuitry couples to the local oscillation generation circuitry and includes a plurality of local oscillation repeater circuits. Each local oscillation repeater circuit corresponds to a respective one of the plurality of RF transceivers (transmitter, receiver, or both) Each local oscillation repeater circuit includes a local oscillation repeater circuit input, a local oscillation repeater circuit interface driver output coupled to respective one of the plurality of RF transceivers, and a local oscillation repeater circuit output.

Abstract: Various circuit techniques for implementing ultra high speed circuits use current-controlled CMOS (C3MOS) logic fabricated in conventional CMOS process technology. An entire family of logic elements including inverter/buffers, level shifters, NAND, NOR, XOR gates, latches, flip-flops and the like are implemented using C3MOS techniques. Optimum balance between power consumption and speed for each circuit application is achieve by combining high speed C3MOS logic with low power conventional CMOS logic. The combined C3MOS/CMOS logic allows greater integration of circuits such as high speed transceivers used in fiber optic communication systems.

Abstract: A near field RFID system includes an RFID reader and an RFID tag. The RFID reader includes a transmit path and a receive path, wherein the transmit path includes: an encoding section coupled to convert data into encoded data; a digital to analog conversion module coupled to convert the encoded data into an analog encoded signal; a power amplifier coupled to amplify the analog encoded signal; and a plurality of coils coupled to generate a plurality of electromagnetic fields from the analog encoded signal. The RFID tag that includes: a coil coupled to generate a current and a recovered signal from at least one of the plurality of electromagnetic fields; a power recovery circuit coupled to generate a voltage from the current; and a data processing section coupled to process the recovered signal, wherein the data processing section is powered via the voltage.

Abstract: LDPC (Low Density Parity Check) code size adjustment by shortening and puncturing. A variety of LDPC coded signals may be generated from an initial LDPC code using selected shortening and puncturing. Using LDPC code size adjustment approach, a single communication device whose hardware design is capable of processing the original LDPC code is also capable to process the various other LDPC codes constructed from the original LDPC code after undergoing appropriate shortening and puncturing. This provides significant design simplification and reduction in complexity because the same hardware can be implemented to accommodate the various LDPC codes generated from the original LDPC code. Therefore, a multi-LDPC code capable communication device can be implemented that is capable to process several of the generated LDPC codes. This approach allows for great flexibility in the LDPC code design, in that, the original code rate can be maintained after performing the shortening and puncturing.