Abstract:
A sender (702) transmits one or more frames to a receiver (704). The receiver (704) either calculates a carrier frequency difference or a time difference using the one or more frames. A clock (722) in the receiver (704) is synchronized with a clock (714) in the sender (702) using the carrier frequency difference or the time difference.
Abstract:
The disclosed systems and methods relate to electric lighting systems and charging and connection mechanisms thereof. In one example, an electric lighting system comprises a charger configured for electrical communication with a power source. The electric lighting system further comprises an electric light source removably couplable to, and configured for electrical communication with, the charger, the electric light source comprising a lighting element. The electric lighting system further comprises a light source holder removably couplable to the electric light source, wherein, when the electric light source is removably coupled to the light source holder, the electric light source and the light source holder share a central axis.
Abstract:
The disclosed systems and methods relate to improved tamper-proof cases for securely storing and shipping products. In one example, a tamper-proof case comprises a unibody frame constructed from a single piece of material. The unibody frame can comprise six sides and include one or more living hinges that allow the unibody frame to fold into a completed case. Various sides can be configured to receive panels to give the crate additional structure, rigidity, and security. Additionally, the frame can comprise a split-top lid with a self-locking mechanism with a tamper-proof pull tab for opening the lid.
Abstract:
In one embodiment, a TFI-OFDM receiver system (22) is able to more reliably decode the information bits by estimating the noise variance associated with the channel and using these estimates in mitigating in-band interference. In another embodiment, there is a TFI-OFDM receiver system (66) that is able to update the estimated channel impulse response and the noise variance by generating reference OFDM symbols from the received header symbols, the band hopping pattern provided by the TFC number associated with the communication link, the estimated channel impulse response and the noise variance estimates and symbols generated from a FFT processor (30).
Abstract:
Systems and methods according to the present invention provide channel estimation methods, systems and devices which determine a coarse channel estimate (40) and a fine channel estimate (66). The coarse channel (40) estimate can be determined based on the channel estimation sequence transmitted to the receiver and then used to detect header symbols. The header symbols can be used to calculate additional channel estimates which can then be combined with the coarse channel estimate (40) to determine a fine channel estimate (66).
Abstract:
A transceiver (300) is provided with a compensation scheme for compensating gain and phase mismatches introduced by respective pairs of base-band filters in the receiver (130a, 130b) and transmitter (230a, 230b) of a wireless transceiver. A correction signal is derived from the gain and phase mismatch observed during loop back tests during which a signal of known characteristics at a selected frequency is passed through the base-band filters. The selected frequency belongs to the spectrum of the sub-band to which the quadrature signals belong.
Abstract:
The present invention provides isolated nucleic acid and amino acid sequences of sweet or amino acid taste receptors comprising two heterologous G-protein coupled receptor polypeptides from the T1R family of sensory G-protein coupled receptors, antibodies to such receptors, methods of detecting such nucleic acids and receptors, and methods of screening for modulators of sweet and amino acid taste receptors.
Abstract:
The present invention provides isolated nucleic acid and amino acid sequences of sweet or amino acid taste receptors comprising two heterologous G-protein coupled receptor polypeptides from the T1R family of sensory G-protein coupled receptors, antibodies to such receptors, methods of detecting such nucleic acids and receptors, and methods of screening for modulators of sweet and amino acid taste receptors.
Abstract:
Systems and methods according to the present invention provide channel estimation methods, systems and devices which determine a coarse channel estimate (40) and a fine channel estimate (66). The coarse channel (40) estimate can be determined based on the channel estimation sequence transmitted to the receiver and then used to detect header symbols. The header symbols can be used to calculate additional channel estimates which can then be combined with the coarse channel estimate (40) to determine a fine channel estimate (66).
Abstract:
Systems and methods according to the present invention provide methods for wireless communications and devices associated therewith which vary the intermediate frequency based upon the particular channel and/or system with which a wireless station is communicating. Tailoring the selection of an intermediate frequency in this way, enables signal energy associated with images created by heterodyne processing to be more easily removed.