Abstract: The present invention creates dedicated point-to-point or point-to-multipoint links between different devices along plural busses. Synchronized clocks to each device enable proper timing of read and write operations to/from the bus. The bus connection between the devices are selectively switchable so that dedicated bus connections between devices can be switched on and off as needed. Since the links are point-to-point between sending and receiving devices, the throughput of star-like topology (e.g., Ethernet) can be achieved with very low latency. An arbiter creates the link. The link is established indefinitely, for as long as the arbiter configures it to exist. Additional transactions through the link require only a frame signal to be asserted by the sender and the frame signal to be interpreted as a“data ready” signal by the target.

Abstract: The present invention creates dedicated point-to-point or point-to-multipoint links between different devices along plural busses. In a preferred embodiment, all of the devices are on the same chip or PC board. Synchronized clocks to each device enable proper timing of read and write operations to/from the bus. The bus connection between the devices are selectively switchable so that dedicated bus connections between devices can be switched on and off as needed. Since the links are point-to-point between sending and receiving devices, the throughput of star-like topology (e.g., Ethernet) can be achieved with very low latency. An arbiter creates the link. The link is established indefinitely, for as long as the arbiter configures it to exist. Additional transactions through the link require only a frame signal to be asserted by the sender and the frame signal to be interpreted as a “data ready” signal by the target.

Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.

Abstract: A method and apparatus are disclosed for beam selection in a non-stationary subscriber radio unit having a multi-beam antenna array. The disclosed multi-beam antenna array acts in an omni-directional manner whenever signal-to-noise ratio (SNR) performance is sufficient, and excludes individual branches, as necessary, on the basis of SNR performance. A multi-mode approach is used to select appropriate antennas in the multi-beam antenna array. A given mode is established on the basis of the SNR of the received signal. Generally, if the SNR of the received signal satisfies predefined criteria, the non-stationary subscriber radio unit will operate the multi-beam antenna array in an omni-directional-like manner, by equally combining the received signal from each individual narrow-beam antenna branch.

Abstract: In the method and apparatus of controlling power of a transmitted communication signal, a communication signal is amplified and transmitted. At least one parameter on the transmitted signal is received, and a measure of interference with the transmitted signal is determined based on the received parameter. An average power level of the communication signal is increased by clipping the communication signal prior to amplification by an amount based on the determined measure.

Abstract: The present invention provides a controller for use with a transceiver in a wireless communications network. In one embodiment, the controller includes a sensing system that senses, perhaps periodically, at least one characteristic associated with at least two channels of the wireless communications network. The controller further includes a modification system that updates channel information in a channel information table associated with the at least two channels based on the at least one characteristic. The controller still further includes a selection system that selects channels in accordance with the channel information.