Abstract: A transmit power optimization and rate-control system includes a transmitter circuit having one or more power amplifiers transmit radio-frequency (RF) signals at a transmission (Tx) rate and a Tx power level. A receiver circuit receives RF signals, decodes the received RF signals and provides one or more Tx status feedbacks. A rate-control module adjusts the Tx rate based at least on a channel condition. A probing engine generates at least two consecutive frames at a first Tx power level, and a second Tx power level in response to a trigger causes the transmitter to transmit the at least two consecutive frames, and processes respective Tx status feedbacks received in response to transmission of the two consecutive frames in order to optimize the Tx power of the transmitter.

Abstract: A device implementing unified coordination of wireless communications over multiple physical layers may include a MAC module communicatively coupled to first and second physical layer modules that are each configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to provide data to the first physical layer module for transmission to the another device over the first physical wireless channel, where the first physical wireless channel is associated with a first link parameter. The MAC module may be further configured to facilitate initializing the second physical wireless channel based at least in part on the first link parameter of the first physical wireless channel, and after initialization of the second physical wireless channel, provide second data to the second physical layer module for transmission to the another device over the second physical wireless channel.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: A device implementing unified coordination of wireless communications over multiple physical layers may include a MAC module communicatively coupled to first and second physical layer modules that are each configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to provide data to the first physical layer module for transmission to the another device over the first physical wireless channel, where the first physical wireless channel is associated with a first link parameter. The MAC module may be further configured to facilitate initializing the second physical wireless channel based at least in part on the first link parameter of the first physical wireless channel, and after initialization of the second physical wireless channel, provide second data to the second physical layer module for transmission to the another device over the second physical wireless channel.

Abstract: A device implementing unified coordination of wireless communications over multiple physical layers may include a MAC module communicatively coupled to first and second physical layer modules that are each configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to provide data to the first physical layer module for transmission to the another device over the first physical wireless channel, where the first physical wireless channel is associated with a first link parameter. The MAC module may be further configured to facilitate initializing the second physical wireless channel based at least in part on the first link parameter of the first physical wireless channel, and after initialization of the second physical wireless channel, provide second data to the second physical layer module for transmission to the another device over the second physical wireless channel.

Abstract: A device implementing unified media access control (MAC) for multiple physical layer devices may include at least one processor communicatively coupled to first and second physical layer modules that are configured to communicate with another device over first and second wireless channels, respectively. The at least one processor may be configured to receive one or more data items to be transmitted to the another device and to select at least one of the first or second physical layer modules for transmission of the one or more data items based at least in part on a first condition of the first physical wireless channel and a condition of the second physical wireless channel. The at least one processor may be further configured to provide the one or more data items to the selected at least one of the first or second physical layer modules for transmission to the another device.

Abstract: A transmit power optimization and rate-control system includes a transmitter circuit having one or more power amplifiers transmit radio-frequency (RF) signals at a transmission (Tx) rate and a Tx power level. A receiver circuit receives RF signals, decodes the received RF signals and provides one or more Tx status feedbacks. A rate-control module adjusts the Tx rate based at least on a channel condition. A probing engine generates at least two consecutive frames at a first Tx power level, and a second Tx power level in response to a trigger causes the transmitter to transmit the at least two consecutive frames, and processes respective Tx status feedbacks received in response to transmission of the two consecutive frames in order to optimize the Tx power of the transmitter.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: A device implementing unified media access control (MAC) for multiple physical layer devices may include at least one processor communicatively coupled to first and second physical layer modules that are configured to communicate with another device over first and second wireless channels, respectively. The at least one processor may be configured to receive one or more data items to be transmitted to the another device and to select at least one of the first or second physical layer modules for transmission of the one or more data items based at least in part on a first condition of the first physical wireless channel and a condition of the second physical wireless channel. The at least one processor may be further configured to provide the one or more data items to the selected at least one of the first or second physical layer modules for transmission to the another device.

Abstract: In some aspects, the disclosure is directed to methods and systems for utilizing protocols to enable two 802.11 devices to exchange their dynamically-changing local channel availability table and form a mutual channel availability table with time, frequency, and transmission rate domains available. This table may be used to make optimum opportunistic use of link resources by adapting packet duration, frequency utilization and transmission rate to channel conditions.

Abstract: A device implementing unified media access control (MAC) for multiple physical layer devices may include a MAC module communicatively coupled to first and second physical layer modules that are configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to receive one or more data items to be transmitted to the another device and to select at least one of the first or second physical layer modules for transmission of the one or more data items based at least in part on a first wireless link quality of the first physical wireless channel and a second wireless link quality of the second physical wireless channel. The MAC module may be further configured to provide the one or more data items to the selected at least one of the first or second physical layer modules for transmission to another device.

Abstract: A device implementing unified coordination of wireless communications over multiple physical layers may include a MAC module communicatively coupled to first and second physical layer modules that are each configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to provide data to the first physical layer module for transmission to the another device over the first physical wireless channel, where the first physical wireless channel is associated with a first link parameter. The MAC module may be further configured to facilitate initializing the second physical wireless channel based at least in part on the first link parameter of the first physical wireless channel, and after initialization of the second physical wireless channel, provide second data to the second physical layer module for transmission to the another device over the second physical wireless channel.

Abstract: A device implementing unified media access control (MAC) for multiple physical layer devices may include a MAC module communicatively coupled to first and second physical layer modules that are configured to communicate with another device over first and second physical wireless channels, respectively. The MAC module may be configured to receive one or more data items to be transmitted to the another device and to select at least one of the first or second physical layer modules for transmission of the one or more data items based at least in part on a first wireless link quality of the first physical wireless channel and a second wireless link quality of the second physical wireless channel. The MAC module may be further configured to provide the one or more data items to the selected at least one of the first or second physical layer modules for transmission to the another device.

Abstract: A network device for cancelling spurs without affecting an incoming signal. The network device includes an estimator for estimating amplitude and phase of a spur over a predetermined period of time. The network device also includes processing means for freezing further estimation of the amplitude and phase of the spur, for cancelling for an estimated spur and for allowing incoming packets. The network device further includes subtracting means for subtracting the estimated spur from an incoming packet. The estimated spur is subtracted from the incoming packet without affecting incoming signals that are not part of the estimated spur.

Abstract: The present invention relates to a DC offset canceling circuit. In one aspect of the invention, a DC offset canceling circuit with independently configurable gain and roll-off frequency is provided. In one embodiment of the present invention, the DC offset canceling circuit is used in the receive path of a down-conversion wireless receiver. In another aspect of the invention, a method for independently varying the gain and the roll-off frequency of the DC offset canceling circuit is provided. In one embodiment, the method is used to independently operate a gain control scheme and a DC offset cancellation strategy in a DC canceling circuit.

Abstract: A communication system, including a receiver, is described having a common clock source that drives both carrier frequency (fc) and sampling frequency (fs). The receiver comprises a first signal processing stage for down converting a received data stream to baseband, a demodulation module coupled to the first signal processing stage for demodulating the down-converted data stream, and a second signal processing stage coupled to the demodulation module for decoding the demodulated data stream. Additionally, the receiver includes a carrier frequency offset (CFO) estimation module and a sampling frequency offset (SFO) correction module. The SFO correction module receives an estimated CFO, and then determines an SFO correction based on the estimated CFO, and applies the SFO correction to the received data stream.

Abstract: Frame processing for a wireless communication system. The frame processing includes detecting reception of a frame based on a portion of a preamble of a frame, wherein the frame includes a preamble and a data payload. With detecting the reception of a frame, determining a frame type of a plurality of frame types from at least the portion of the preamble. Processing a remaining portion of the preamble in accordance with the frame type to determine payload processing parameters, and processing the data payload based on the payload processing parameters.