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US 8,913,529 B2Granted
MIMO WLAN system
AssigneeQUALCOMM Incorporated
InventorsJ. Rodney Walton, Mark S. Wallace, John W. Ketchum, Steven J. Howard
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AssigneeQUALCOMM Incorporated
InventorsJ. Rodney Walton, Mark S. Wallace, John W. Ketchum, Steven J. Howard
Estimating the term…
A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgment, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.
A method of transmitting and receiving pilots in a wireless multiple-input multiple-output (MIMO) communication system, comprising:
An apparatus in a wireless multiple-input multiple-output (MIMO) communication system, comprising:
An apparatus in a wireless multiple-input multiple-output (MIMO) communication system, comprising:
A non-transitory computer-readable medium for use in a wireless multiple-input multiple-output (MIMO) communication system having a set of instructions stored thereon, the set of instructions being executable by one or more processors to perform the steps of:
Dependencies are inferred from the claim text.