摘要:
A received signal includes a plurality of user signals, the plurality of user signals including at least a first user signal and a second user signal. The first user signal corresponds to first user data that has been modulated independently of second user data corresponding to the second user signal. At least one of the first user signal or the second user signal is encoded with a finite state machine encoder independently of the other of the first user signal and the second user signal. The received signal is demodulated, wherein demodulating the received signal includes calculating distances between (i) each transmit symbol in the received signal and (ii) expected symbol values, wherein each expected symbol value corresponds to user data for multiple users including the first user and the second user. User data in the received signal including the first user data and the second user data is decoded based on the calculated distances.
摘要:
A plurality of diagonal matrices Ci is determined, where the plurality of diagonal matrices Ci is for modifying a plurality of transmit signals to be transmitted via a plurality of transmit antennas, each diagonal matrix Ci for modifying an i-th block of sub-carriers, adjacent in frequency, in the plurality of transmit signals. The plurality of diagonal matrices Ci is used to modify the plurality of transmit signals to implement transmit diversity.
摘要:
Systems, methods, and other embodiments associated with QoS-aware CQI are described. In one embodiment, an apparatus includes a channel quality indicator (CQI) determination logic configured to compute a quality of service (QoS) aware CQI as a function of a QoS associated with a wireless channel over which a first wireless communication apparatus and a second wireless communication apparatus communicate. The apparatus may also include a CQI report logic configured to report the QoS-aware CQI, in a CQI report message, to a wireless communication apparatus that requested the QoS-aware CQI in a CQI request message.
摘要:
Methods and apparatus are provided for directing a beam towards a receiving device in the presence of interference. A beam transmitted by a transmission source is received at a receiving device. The received beam is affected by an interference signal from an interfering source. The receiving device computes a covariance matrix that represents a channel estimate associated with the interfering source. The receiving device modifies a predetermined sounding signal based on the covariance matrix for transmission to the transmission source. The receiving device causes the transmission source to estimate an equivalent channel matrix based on the predetermined sounding signal and the modified predetermined sounding signal. The equivalent channel matrix represents the channel estimate associated with the interfering source and a channel estimate associated with the transmission source.
摘要:
A received signal that includes a plurality of user signals is demodulated. The plurality of user signals includes at least a first user signal and a second user signal. The first user signal corresponds to first user data that has been modulated independently of second user data corresponding to the second user signal, and the first user signal is encoded with a first finite state machine encoder independently of the other user signals. The first finite state machine encoder has a number of states S1. The second user signal is encoded with a second finite state machine encoder independently of the other user signals, and the second finite state machine encoder has a number of states S2. Demodulating the received signal includes calculating distances between (i) each transmit symbol in the received signal and (ii) expected symbol values, wherein each expected symbol value corresponds to user data for multiple users including the first user and the second user. The first user data in the received signal is decoded based on the calculated distances utilizing a finite state machine decoder having S1 states.
摘要:
Systems and techniques relating to wireless communications are described. A described technique includes generating a paging message for a wireless communication device, the paging message can include a positioning request; transmitting the paging message to the wireless communication device; and receiving, during a connection establishment process, a connection message from the wireless communication device. The connection message can include a positioning response that is responsive to the positioning request.
摘要:
Systems and methods are provided for computing a relative path delay between multiple transmitting source to select a source that is closest to a receiving device. Preamble sequences unique to each source are received by a receiving device. The receiving devices determines based on a channel estimation or differential algorithm which transmitting source is closer to the receiving device. The channel estimation algorithm computes the path delay based on a channel estimation correlation at different preamble sequence indices. The differential algorithm computes the path delay based on a correlation between the received and transmitted preamble sequences at different preamble sequence indices. The receiving device selects the closer of the multiple sources to be the source from which to extract data.
摘要:
A method of adaptively selecting a modulation and coding scheme (MCS) of a communication link includes obtaining a first parameter corresponding to a Quality of Service (QoS) requirement of the communication link, obtaining a second parameter indicative of a physical condition of the communication link, selecting an MCS based on at least the first parameter and the second parameter.
摘要:
A plurality of phases are determined. The plurality of phases are to be applied to a plurality of transmit signals to be transmitted via a plurality of transmit antennas. Each transmit signal comprises a plurality of sub-carriers. Each phase of the plurality of phases is to be applied to a corresponding block of sub carriers in the plurality of transmit signals, and each block of sub-carriers comprises a plurality of sub-carriers that are adjacent in frequency. The plurality of phases are applied to the plurality of transmit signals to implement transmit diversity. Each phase is applied to the corresponding block of sub carriers in the plurality of transmit signals.
摘要:
Communication between a base station and remote stations is partitioned into frames, each including a first frequency reuse zone having a number of slots. Slots are allocated by assigning a first data rate to each remote station for communication using the first frequency reuse zone. Each remote station is assigned a respective slot allocation comprising a first number of slots of the first frequency reuse zone and has a weighted data rate dependent on the first data rate and the respective slot allocation. The slot allocations are determined so as to maximize the minimum of the weighted data rates of the remote stations. Slots may be allocated using a data rate assigner to assign a first data rate to each remote station for communication using slots of the first frequency reuse zone, and using a slot allocation provider to provide a respective slot allocation for each remote station.