Abstract: A method and apparatus for a graph database instance (GDI) maintaining a secondary index, that indexes data from a sparse data map storing graph application data, within a sparse data map dedicated to the secondary index. The GDI formulates row-keys, for the secondary index map, by hashing the values of key/value pairs stored in rows of a map storing application data. The GDI stores for each formulated row-key, in the row of the secondary index that is indexed by the formulated row-key, references to rows of the map storing application data that match the key/value pair on which formulation of the row-key was based. The row-keys into the secondary index map may incorporate bucket identifiers, which, for each key/value pair, allows the GDI to spread the references to graph elements that match the key/value pair among a set number of “buckets” for the key/value pair within the secondary index map.

Abstract: A method and apparatus for a graph database instance (GDI) maintaining a secondary index, that indexes data from a sparse data map storing graph application data, within a sparse data map dedicated to the secondary index. The GDI formulates row-keys, for the secondary index map, by hashing the values of key/value pairs stored in rows of a map storing application data. The GDI stores for each formulated row-key, in the row of the secondary index that is indexed by the formulated row-key, references to rows of the map storing application data that match the key/value pair on which formulation of the row-key was based. The row-keys into the secondary index map may incorporate bucket identifiers, which, for each key/value pair, allows the GDI to spread the references to graph elements that match the key/value pair among a set number of “buckets” for the key/value pair within the secondary index map.

Abstract: An electronic device may be operated by providing Bluetooth communication duty cycle information to a Wireless Local Area Network (WLAN) module. A determination is made, based on the Bluetooth communication duty cycle information, if there is sufficient time during a current Bluetooth inactive communication interval to complete a WLAN communication. If it is determined that there is not sufficient time to complete the WLAN communication during the current Bluetooth inactive communication interval, then the WLAN transmission is postponed to a subsequent Bluetooth inactive communication interval.

Abstract: A device may identify interfaces, determine an energy-time product for each of the identified interfaces, and transmit data through one of the identified interfaces based on the determined energy-time products.

Abstract: Method, wireless communication apparatus, and computer program products are provided for adapting at least one transmission setting to be applied by a first transceiver, which is adapted to be operative in a predetermined frequency band, in response to communication by a second transceiver, which is adapted to be operative in the predetermined frequency band. It is determined whether prioritized data traffic is communicated by the second transceiver. If prioritized data traffic is communicated by the second transceiver, the transmission setting is adapted in dependence of the prioritized data traffic.

Abstract: In a multiple-input, multiple-output (MIMO) system, a receiver is implemented with at least one additional receive path beyond the number of transmit antennas used to transmit the signals (e.g., wireless OFDM signals) received at the receiver. In one embodiment, the additional receive path is used to reduced co-channel interference (CCI) in the recovered OFDM signals. In particular, each receive path applies recursive filtering to generate separate subcarrier signals. A processor converts the separate subcarrier signals from the different receive paths into a first set of subcarrier signals corresponding to each transmitted OFDM signal, where each first set of subcarrier signals has desired signal and possibly CCI. The processor also generates a second set of subcarrier signals corresponding to the CCI. The processor subtracts portions of the second set of subcarrier signals from each first set of subcarrier signals to generate recovered OFDM signals having reduced CCI.

Abstract: In a multiple-input, multiple-output (MIMO) system, a receiver is implemented with at least one additional receive path beyond the number of transmit antennas used to transmit the signals (e.g., wireless OFDM signals) received at the receiver. In one embodiment, the additional receive path is used to reduced co-channel interference (CCI) in the recovered OFDM signals. In particular, each receive path applies recursive filtering to generate separate subcarrier signals. A processor converts the separate subcarrier signals from the different receive paths into a first set of subcarrier signals corresponding to each transmitted OFDM signal, where each first set of subcarrier signals has desired signal and possibly CCI. The processor also generates a second set of subcarrier signals corresponding to the CCI. The processor subtracts portions of the second set of subcarrier signals from each first set of subcarrier signals to generate recovered OFDM signals having reduced CCI.

Abstract: In a multiple-input, multiple-output (MIMO) system, a receiver is implemented with at least one additional receive path beyond the number of transmit antennas used to transmit the signals (e.g., wireless OFDM signals) received at the receiver. In one embodiment, the additional receive path is used to reduced co-channel interference (CCI) in the recovered OFDM signals. In particular, each receive path applies recursive filtering to generate separate subcarrier signals. A processor converts the separate subcarrier signals from the different receive paths into a first set of subcarrier signals corresponding to each transmitted OFDM signal, where each first set of subcarrier signals has desired signal and possibly CCI. The processor also generates a second set of subcarrier signals corresponding to the CCI. The processor subtracts portions of the second set of subcarrier signals from each first set of subcarrier signals to generate recovered OFDM signals having reduced CCI.

Abstract: A device may identify interfaces, determine an energy-time product for each of the identified interfaces, and transmit data through one of the identified interfaces based on the determined energy-time products.

Abstract: The present invention is directed to an adaptive phase controller employing a threshold level and a method of controlling a phase. In one embodiment, the adaptive phase controller includes a comparator configured to receive a comparison signal representing a phase and to provide a vernier signal based on comparing first and second samples of the comparison signal when the comparison signal is below the threshold level. Additionally, the adaptive phase controller also includes an adder/decoder coupled to the comparator and configured to adjust a current number corresponding to the phase based on the vernier signal.

Abstract: Method, wireless communication apparatus, and computer program products are provided for adapting at least one transmission setting to be applied by a first transceiver, which is adapted to be operative in a predetermined frequency band, in response to communication by a second transceiver, which is adapted to be operative in the predetermined frequency band. It is determined whether prioritized data traffic is communicated by the second transceiver. If prioritized data traffic is communicated by the second transceiver, the transmission setting is adapted in dependence of the prioritized data traffic.

Abstract: An electronic device may be operated by providing Bluetooth communication duty cycle information to a Wireless Local Area Network (WLAN) module. A determination is made, based on the Bluetooth communication duty cycle information, if there is sufficient time during a current Bluetooth inactive communication interval to complete a WLAN communication. If it is determined that there is not sufficient time to complete the WLAN communication during the current Bluetooth inactive communication interval, then the WLAN transmission is postponed to a subsequent Bluetooth inactive communication interval.

Abstract: The present invention is directed to a channel calibrator and a method of calibrating in-phase and quadrature phase channels for use with a quadrature mixing receiver. In one embodiment, the channel calibrator includes a balancer and an equalizer. The balancer reduces frequency dependent imbalance between an in-phase channel and a quadrature phase channel associated with the receiver. The equalizer decreases frequency independent mismatch between the in-phase channel and the quadrature phase channel.

Abstract: Line-of-sight and non-line-of-sight channel conditions are efficiently and optimally handled in a MIMO wireless network by coupling two or more dual polarization antennas together through a controller that selects a prescribed combination of antenna outputs in response to determination of the existence of a particular channel condition. In this manner, the controlled antenna array develops a suitable level of signal discrimination (decorrelation), whether or not the channel condition provides it. In one embodiment, two dual polarized antennas are separated from each other and have their dual polarization output signals coupled to the same switching element so that the orthogonal outputs from an antenna are available at the same switching element. A controller selects a particularly polarized output signal from each antenna based on a predetermined criterion.

Abstract: In a multiple-input, multiple-output (MIMO) system, a receiver is implemented with at least one additional receive path beyond the number of transmit antennas used to transmit the signals (e.g., wireless OFDM signals) received at the receiver. In one embodiment, the additional receive path is used to reduced co-channel interference (CCI) in the recovered OFDM signals. In particular, each receive path applies recursive filtering to generate separate subcarrier signals. A processor converts the separate subcarrier signals from the different receive paths into a first set of subcarrier signals corresponding to each transmitted OFDM signal, where each first set of subcarrier signals has desired signal and possibly CCI. The processor also generates a second set of subcarrier signals corresponding to the CCI. The processor subtracts portions of the second set of subcarrier signals from each first set of subcarrier signals to generate recovered OFDM signals having reduced CCI.

Abstract: The present invention is directed to an adaptive phase controller employing a threshold level and a method of controlling a phase. In one embodiment, the adaptive phase controller includes a comparator configured to receive a comparison signal representing a phase and to provide a vernier signal based on comparing first and second samples of the comparison signal when the comparison signal is below the threshold level. Additionally, the adaptive phase controller also includes an adder/decoder coupled to the comparator and configured to adjust a current number corresponding to the phase based on the vernier signal.

Abstract: The present invention is directed to a channel calibrator and a method of calibrating in-phase and quadrature phase channels for use with a quadrature mixing receiver. In one embodiment, the channel calibrator includes a balancer and an equalizer. The balancer reduces frequency dependent imbalance between an in-phase channel and a quadrature phase channel associated with the receiver. The equalizer decreases frequency independent mismatch between the in-phase channel and the quadrature phase channel.