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| Number | Title | Issue Date |
| 8155307 | Reliable elliptic curve cryptography computation A method for reliable computation of point additions and point multiplications in an elliptic curve cryptography (ECC) system. Two asymmetric operations are performed: one of the operations is of slightly higher complexity than a conventional ECC operation, and the ... | 04/10/2012 |
| 8139680 | Signal acquisition methods and apparatus in wireless communication systems In an embodiment, a receiver includes an antenna configured to receive a communication frame. The communication frame may include an acquisition code symbol sequence, which in turn may include a plurality of acquisition code symbols. In an embodiment, an acquisition... | 03/20/2012 |
| 8131218 | Methods and apparatus for wirelessly communicating signals that include embedded synchronization/pilot sequences An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time d... | 03/06/2012 |
| 8098645 | Random access slot selection in a communications system A communications system (20) includes a resource controller (22) and a terminal (24) in communication with the resource controller (22). Periodically, the resource controller (22) sends a service announcement (46) that ident... | 01/17/2012 |
| 8085767 | Systems and methods for reliable message delivery over digital networks Systems and methods reliably transmit a message from a sender to a receiver via a network. A reliability module is configured to determine a probability of delivering a packet from the sender to the recipient via the network. Mode selection logic determines transmis... | 12/27/2011 |
| 8036137 | Methods and apparatus for supporting a half-duplex mode of operation for user equipment communications in a radio communication system Embodiments include methods performed in time division duplex (TDD) radio communication systems in which information is communicated between a first node (e.g., a base) and a second node (e.g., user equipment) in a context of a data frame that includes a plurality o... | 10/11/2011 |
| 8000377 | System and method for variable rate multiple access short message communications A communication system and receiver is provided that facilitates increased message size in a communication system that supports a large number of transmitters sharing a common frequency band. The communication system facilitates increased message size by incorporati... | 08/16/2011 |
| 7907679 | Methods and systems for acquiring signals using coherent match filtering Embodiments include methods and apparatus for verifying the detection of a correlation peak, which may represent an acquisition of a received acquisition code symbol sequence. The method includes determining a series of coherently-aligned peaks from a series of corr... | 03/15/2011 |
| 7849315 | Method for managing operability of on-chip debug capability A method for managing operability of an on-chip debug capability (24) in a product (26) configured to execute software (30) includes storing (74, 76) a debug public key (40) and an operational public key (44) in product memo... | 12/07/2010 |
| 7843392 | Dual frequency antenna system A dual-frequency conformal multi-filiar helical antenna system (20) provides a low-profile, low drag antenna useable in flying equipment. This antenna system (20) securely holds within its shell (22) signal distribution circuitry (64), si... | 11/30/2010 |
| 7835693 | Providing service in a satellite communications system to disadvantaged terminals A base station (26) provides service in a satellite communications (SATCOM) system (22) to a terminal (24). The SATCOM system (22) operates in accordance with a first standard (43), and the terminal (24) is unable to communi... | 11/16/2010 |
| 7817802 | Cryptographic key management in a communication network A communication network (22) includes a central node (30) loaded with a trusted key (26) and key material (56) corresponding to an asymmetric key agreement protocol (48). The network (22) further includes vulnerable nodes ( | 10/19/2010 |
| 7747021 | Method and apparatus for fast secure session establishment on half-duplex point-to-point voice cellular network channels Methods and apparatus are provided for secure communication techniques in a communication system. The system can include a first device which communicates with a second device over a channel. A security association can be established during a first session between t... | 06/29/2010 |
| 7742596 | Reliable elliptic curve cryptography computation A method for reliable computation of point additions and point multiplications in an elliptic curve cryptography (ECC) system. Two asymmetric operations are performed: one of the operations is of slightly higher complexity than a conventional ECC operation, and the ... | 06/22/2010 |
| 7742436 | Distributed networking agent and method of making and using the same The present invention relates to an agent for distributed networking and a processor-readable software code. The agent may include, for example, a cosite analyzer, an EMI sniffer, an asset controller module, an asset discovery module, and a link negotiator. The agen... | 06/22/2010 |
| RE41382 | Method and system for detecting interference for global positioning systems A method and system for detecting GPS interference is disclosed. In one exemplary embodiment, a method for detecting interference in a Global Positioning System comprises the steps of receiving at least one satellite signal from one or more satellites in a Global Po... | 06/22/2010 |
| 7738372 | Method and system for capacity analysis for on the move adhoc wireless packet-switched networks A system and method for capacity analysis in communication networks, particularly for on the move ad hoc wireless packet-switched networks, as well as wide variety of other multimedia networks is disclosed. The invention seeks to use the same two attributes per link... | 06/15/2010 |
| 7715563 | Rapid acquisition of state vectors in an encrypted data communication system A state vector acquisition technique for a counter-based cryptographic data communication system is disclosed. The acquisition technique facilitates receipt of the state vector components (the short component and the long components) in any chronological order. The ... | 05/11/2010 |
| 7689997 | Method for allocating memory to tasks without exceeding predefined memory requirements A computer-implemented system (90) is provided that supports a high degree of separation between processing elements. The computer-implemented system (90) comprises a plurality of cells (92) residing on the computer-implemented system, where eac... | 03/30/2010 |
| 7671703 | Coaxial orthomode transducer A coaxial orthomode transducer with improved port to port isolation, low higher order mode (“HOM”) coupling, and low transverse electromagnetic mode (“TEM”) coupling is disclosed. ... | 03/02/2010 |
| 7643817 | Method and apparatus for rapid secure session establishment on half-duplex AD-hoc group voice cellular network channels Techniques are provided for secure group communications in a wireless dispatch system which includes a group of devices. The group of devices can include a first secure device which communicates with a plurality of second secure devices over a channel. ... | 01/05/2010 |
| 7623084 | Angular diversity antenna system and feed assembly for same A feed assembly (26) for an antenna system (38) includes a first feed element (30) that propagates a first beam (32) and a second feed element (34) that propagates a second beam (36). The second feed element (34) is c... | 11/24/2009 |
| 7561864 | RF receiver with NLMS channel estimator and method therefor An RF receiver (12) includes a channel estimator (52). The channel estimator (52) includes a channel estimation filter (82), error signal generator (84), and normalized Least-Mean-Square (NLMS) filter-definition generator 86... | 07/14/2009 |
| 7561514 | Method and system for capacity analysis for On The Move adhoc wireless packet-switched networks A system and method for capacity analysis in communication networks, particularly for on the move ad hoc wireless packet-switched networks, as well as wide variety of other multimedia networks. The invention seeks to use the same two attributes per link (link capaci... | 07/14/2009 |
| 7468967 | System and method for transmission of low rate data Systems and methods are provided for signaling control information in a communication of data. The method includes overwriting a portion of a frame in a sequence of frames with control information. The control information has a low bit size, and the overwriting is p... | 12/23/2008 |
| 7457299 | Definable radio and method of operating a wireless network of same A wireless network (100) includes a number of definable radio systems (102) in communication with one another via a wideband backbone (108). Each of the systems (102) includes a first software programmable transceiver (200) for ext... | 11/25/2008 |
| 7433434 | Communication channel tracking apparatus Apparatus are provided for a communication signal processing apparatus having a channel estimator configured to generate a first channel estimation at a first time point, a linear predictor coupled to the channel estimator, and an adaptive filter coupled with the li... | 10/07/2008 |
| 7404098 | Modem with power manager A programmable modem (20) for processing a waveform includes a general purpose processor (GPP) engine (34) and special purpose programmable signal processing engines (22) in communication with the GPP engine (34). Each of the special purp... | 07/22/2008 |
| 7356075 | Method and apparatus for signal separation An embodiment of a method for parameterizing an input signal includes non-linearly transforming the input signal, removing higher order terms by passing the input signal through a low pass filter to produce a linear combination of data symbols and DC components, sol... | 04/08/2008 |
| 7339881 | Method and apparatus for encoding compressible data for transmission over variable quality communication channel A multi-carrier communication system (400) groups subchannels (802) into different quality-of-signal (QoS) regions (804). An unconstrained optimization process (1200) is performed independently for the subchannels (802) of the diff... | 03/04/2008 |
| 7324582 | System and method for the directional reception and despreading of direct-sequence spread-spectrum signals A system (100) and method for the reception and despreading of a code-division multiple access (CDMA) global positioning system (GPS) signal (200), or other direct-sequence spread-spectrum (DSSS) signals, is provided. An antenna array (102) rece... | 01/29/2008 |
| 7253755 | High dynamic range analog to digital converter architecture An analog-to-digital converter (“ADC”) architecture as described herein utilizes a digital signal processor having suitably configured waveform prediction logic that can predict expected types of input signals. The ADC architecture subtracts the predictable sign... | 08/07/2007 |
| 7231086 | Knowledge-based hierarchical method for detecting regions of interest A knowledge-based hierarchical method for detecting regions of interests (ROIs) uses prior knowledge of the targets and the image resolution in detecting ROIs. The result produces ROIs that contain only one target that is completely enclosed within the ROI. The dete... | 06/12/2007 |
| 7221312 | Method and system for detecting interference for global positioning systems A method and system for detecting GPS interference is disclosed. In one exemplary embodiment, a method for detecting interference in a Global Positioning System comprises the steps of receiving at least one satellite signal from one or more satellites in a Global Po... | 05/22/2007 |
