Abstract: A transmitter comprises a local oscillator circuit operable to generate a reference signal, a modulator circuit operable to generate a data-carrying signal using the reference signal, and a test signal generator circuit operable to generate a test signal using the reference signal. The test signal has a first bandwidth, and a test signal insertion circuit is operable to combine the data-carrying signal and the test signal to generate a combined signal. An amount of bandwidth in the combined signal allocated to the test signal is greater than the first bandwidth such that a component of the combined signal corresponding to the test signal is bordered by whitespace. A receiver may then use the test signal to determine and correct for phase noise introduced in the transmitter.

Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.

Abstract: An adaptive stepped gain amplifier, for example for use in broadband receivers, has a step size which is dynamically compensated (for each received frequency) to cope with step error caused by frequency dependence of the amplifier performance.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: Canceling distortion in the receive path of a radio is achieved by down-converting an RF transmit signal to cancel leakage and intermodulation noise in a receive path baseband or intermediate frequency signal. Cancelation may be combined with digital pre-distortion of the transmit signal. Processing may be applied to optimize cancelation. Further cancelation can be achieved by re-modulating the demodulated and error-corrected receive signal, and predicting distortion caused by the transmit path. The cancelation system may be calibrated using a test signal.

Abstract: A radio receiver processing path has a mixer with active interference/blocker cancellation to reduce the intensity of leaked and undesired signals by using a replica of the transmitted signal, emulating the phase and attenuation through the leakage path and subtracting the emulated signal within the mixer. Intermodulation distortions are predicted through the use of nonlinear modeling in the digital baseband between the baseband transmitter and baseband receiver and subsequently subtracted from the received signal. The nonlinear basis functions are combined to model the composite nonlinearity in the signal path based on digital baseband transmitted data. The modeled nonlinearity is subtracted from the received signal, and the result is observed and used to guide the nonlinear modeling parameters using self-contained control loops.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: An adaptive stepped gain amplifier, for example for use in broadband receivers, has a step size which is dynamically compensated (for each received frequency) to cope with step error caused by frequency dependence of the amplifier performance.

Abstract: Automatic recalculation of tuner filter coefficients are made in order to compensate for changes in signal properties due to processing functionality in the tuner. The architecture compensates for processing changes, such as a large continuous range of clock frequency shifts, while not sacrificing bandwidth response characteristics of the channel filter. Embodiments may calculate coefficients in order to obtain response characteristics while utilizing a completely on-chip architecture, which does not require accessing off-chip software driver programs, and does not require complex look-up tables containing filter coefficients stored in onboard memory.

Abstract: Systems and methods which provide a multimode tuner architecture implementing direct frequency conversion are shown. Embodiments provide a highly integrated configuration wherein low noise amplifier, tuner, analog and digital channel filter, and analog demodulator functionality are provided in a single integrated circuit. A LNA of embodiments implements a multi-path configuration with seamless switching to provide desired gain control while meeting noise and linearity design parameters. Embodiments of the invention implement in-phase and quadrature (IQ) equalization and a multimode channelization filter architecture to facilitate the use of direct frequency conversion. Embodiments implement spur avoidance techniques for improving tuner system operation and output using a clock signal generation architecture in which a system clock, sampling clock frequencies, local oscillator (LO) reference clock frequencies, and/or the like are dynamically movable.

Abstract: Systems and methods which provide a multimode tuner architecture implementing direct frequency conversion are shown. Embodiments provide a highly integrated configuration wherein low noise amplifier, tuner, analog and digital channel filter, and analog demodulator functionality are provided in a single integrated circuit. A LNA of embodiments implements a multi-path configuration with seamless switching to provide desired gain control while meeting noise and linearity design parameters. Embodiments of the invention implement in-phase and quadrature (IQ) equalization and a multimode channelization filter architecture to facilitate the use of direct frequency conversion. Embodiments implement spur avoidance techniques for improving tuner system operation and output using a clock signal generation architecture in which a system clock, sampling clock frequencies, local oscillator (LO) reference clock frequencies, and/or the like are dynamically movable.

Abstract: A system and method for conducting commerce and sales operations is disclosed. A sales representative identifies a customer, chooses a product, and completes a sales transaction using a front-end POS software application. The sales data is transferred to a central storage server, where a master database is created with the data from the front-end POS software application. The central storage server transmits and receives data from back-end corporate servers and databases and creates a master database containing data from corporate applications. The front-end POS software devices uses a holster that includes a docking station, sliding cradle for a mobile device, a card reader, and an infrared scanner to identify products and complete payment.

Abstract: Systems and methods which provide a multimode tuner architecture implementing direct frequency conversion are shown. Embodiments provide a highly integrated configuration wherein low noise amplifier, tuner, analog and digital channel filter, and analog demodulator functionality are provided in a single integrated circuit. A LNA of embodiments implements a multi-path configuration with seamless switching to provide desired gain control while meeting noise and linearity design parameters. Embodiments of the invention implement in-phase and quadrature (IQ) equalization and a multimode channelization filter architecture to facilitate the use of direct frequency conversion. Embodiments implement spur avoidance techniques for improving tuner system operation and output using a clock signal generation architecture in which a system clock, sampling clock frequencies, local oscillator (LO) reference clock frequencies, and/or the like are dynamically movable.

Abstract: Systems and methods which provide a multimode tuner architecture implementing direct frequency conversion are shown. Embodiments provide a highly integrated configuration wherein low noise amplifier, tuner, analog and digital channel filter, and analog demodulator functionality are provided in a single integrated circuit. A LNA of embodiments implements a multi-path configuration with seamless switching to provide desired gain control while meeting noise and linearity design parameters. Embodiments of the invention implement in-phase and quadrature (IQ) equalization and a multimode channelization filter architecture to facilitate the use of direct frequency conversion. Embodiments implement spur avoidance techniques for improving tuner system operation and output using a clock signal generation architecture in which a system clock, sampling clock frequencies, local oscillator (LO) reference clock frequencies, and/or the like are dynamically movable.

Abstract: The device for rotationally locking a clamping nut for a component on an end of a hollow shaft, said clamping nut being screwed inside said shaft and having a free end, comprising: at least one shaft cutout on the radially inner periphery of said end of the shaft, at least one nut cutout on the radially outer periphery of an end of said clamping nut, and a locking plug intended to be placed in a locking hole formed by bringing a shaft cutout into coincidence with a nut cutout.