摘要:
Embodiments of methods and apparatus for beamforming training symbols in wireless multiple-input-multiple-output systems are generally described herein. Other embodiments may be described and claimed.
摘要:
The effects of interference are mitigated in a wireless system through updating noise variance estimates. Noise variance estimates may be updated after the reception of a preamble in an OFDM receiver.
摘要:
The skin of a computing device comprises a conductive material. A slot is included in the skin to form a slot antenna. Various embodiments of the slot antenna can support multiple frequency bands with a single slot and provide directional propagation patterns.
摘要:
An access point may use two omni-directional antennas or one omni-directional antenna and multiple sectored antennas in a communications network. The mobile stations may use sectored antennas. The omni-directional antennas may include two or more sectored antennas.
摘要:
In Spatial Division Multiple Access (SDMA) communications, mobile devices that are transmitting to a base station substantially simultaneously during a predetermined communications phase may wait until after an end of the predetermined communications phase to receive acknowledgments to their transmissions, so that a mobile device making a relatively short transmission does not experience an acknowledgment timeout while another mobile device is still completing a relatively long transmission. In some embodiments, the mobile devices may transmit a non-immediate block acknowledgment request during the communications phase.
摘要:
An embodiment of the present invention provides an apparatus, comprising a receiver capable of selecting optimal pilot locations and providing feedback of the pilot locations to a transmitter in communication with the receiver. The optimal pilot locations may be selected by locations that avoid strong interference or platform noise at the receiver, by locations that avoid deep fading, by locations that maximize the spacing between pilot tones at the two ends of a wireless frequency band or by locations that equalize the interspacing between any two adjacent pilots.
摘要:
Techniques are provided that allow power control and/or hand off operations to be performed in a wireless network in a manner that can enhance overall network throughput.
摘要:
Handshaking protocols, techniques, and structures are presented for use in implementing closed loop MIMO using explicit feedback in a wireless network.