摘要:
The present disclosure describes techniques for avoiding interference among multiple radios. In some aspects a communication channel of a first wireless interface of a device is determined to be adjacent to a frequency band in which a second wireless interface of the device is configured to communicate and channel measurement results are altered prior to transmission by the first wireless interface to a base station, effective to prevent the base station from selecting, for use by the first wireless interface, the channel adjacent to the frequency band of the second wireless interface.
摘要:
Devices, systems, methods, and other embodiments associated with phase based transformation of repeated signals are described. In one embodiment, an apparatus includes duplication logic configured to duplicate a string of data to form a duplicate string of data. Transformation logic is configured to modify phases associated with the string of data to generate a modified string of data. Signal generation logic is configured to generate a signal for wireless transmission where the signal having at least the modified string of data and the duplicate string of data.
摘要:
A method for beamforming in a communication system includes receiving a first plurality of training data units via a plurality of antennas, applying a different steering vector as each training data unit is received, generating a first plurality of quality indicators based on the first plurality of received training data units, such that each of the first plurality of quality indicators corresponds to a respective one of the first plurality of received training data units, and selecting a steering vector based on the different steering vectors and the first plurality of quality indicators.
摘要:
In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, a beamforming training (BFT) data unit that conforms to a second format is transmitted, wherein a length of the BFT data unit is shorter than lengths supported by the first format, wherein the BFT data unit is for transmitting PHY beamforming training information. Information to indicate the BFT data unit conforms to the second format is transmitted to a receiving device. The BFT data unit is generated according to the second format, wherein the BFT data unit includes BFT information elements. The BFT data unit is then transmitted to the receiving device.
摘要:
A method for beamforming in a communication system includes receiving a plurality of signals via a plurality of antennas, where the plurality of signals corresponds to at least one known training signal, generating a respective one of a plurality of different antenna weight vectors to be applied to the plurality of antennas as each of the plurality of signals is received, where each of the plurality of antenna weight vectors is a respective base vector of a unitary matrix, and generating a receiver antenna weight vector based on at least the received plurality of signals, the plurality of different antenna weight vectors, and the at least one known training signal.
摘要:
In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, a beamforming training (BFT) data unit that conforms to a second format is transmitted, wherein a length of the BFT data unit is shorter than lengths supported by the first format, wherein the BFT data unit is for transmitting PHY beamforming training information. Information to indicate the BFT data unit conforms to the second format is transmitted to a receiving device. The BFT data unit is generated according to the second format, wherein the BFT data unit includes BFT information elements. The BFT data unit is then transmitted to the receiving device.
摘要:
In a method for beamforming in communication a system, a plurality of different antenna weight vectors are generated. Each of the plurality of antenna weight vectors is a respective base vector of a unitary matrix. At least one training signal is transmitted a plurality of times via a plurality of antennas. A respective antenna weight vector from the plurality of different antenna weight vectors is applied each time the at least one training signal is transmitted. Feedback signals are received, where the feedback signals correspond to the at least one training signal transmitted the plurality of times and received at a receiver. A transmitter antenna weight vector is generated based on a mathematical combination of at least (i) the at least one training signal and (ii) the feedback signals.
摘要:
In embodiments of frame boundary detection, a data signal that includes a plurality of different synchronization signals is received. Symbol boundaries of orthogonal frequency-division multiplexing (OFDM) symbols are detected in the data signal based on signal characteristics of the OFDM symbols. The characteristics of the OFDM symbols include cyclic shift properties of the OFDM symbols, such as the characteristic that a first portion of an OFDM symbol is the same as a last portion of the OFDM symbol. One or more of the plurality of different synchronization signals in the data signal can be located using the detected symbol boundaries of the OFDM symbols to determine a frame boundary of a data frame in the data signal.
摘要:
Systems and methods for intelligently switching between communication modes. An optimum communication mode is selected based upon determining the mobility of the subscriber station, the location of the subscriber station, and orthogonality of signals received from the subscriber station with respect to a signal of another subscriber station. Each determination may be continually or incrementally performed according to the passage of a time interval or upon observation of changes in relevant conditions.
摘要:
A method and system for cooperative multiple-input multiple output (MIMO) transmission operations in a multicell wireless network. Under the method, antenna elements from two or more base stations are used to from an augmented MIMO antenna array that is used to transmit and receive MIMO transmissions to and from one or more terminals. The cooperative MIMO transmission scheme supports higher dimension space-time-frequency processing for increased capacity and system performance.