Methods and arrangements for communicating in a multiple input multiple output system
AssigneeIntel Corporation
InventorsXiao-Feng Qi, Keith Holt
Life of this patent
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Abstract
Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposition precoder format based on the determined channel state information and transmitting the precoder format information to a base station. During a return transmission the user equipment can receive user data with the precoder format information and utilize a non-linear detector to demodulate and decode the user data. Based on the reception the user equipment can estimate channel quality; and transmitting channel quality information as feedback.
Claims18
A method of wireless transmission via more than one spatial stream comprising;
- assembling a data packet to be transmitted from a base station via a communication link to a receiving device;
- receiving, at the base station, channel quality information associated with the communication link;
- selecting a single modulation and coding scheme for the more than one spatial stream based on the channel quality information to maximize throughput across the more than one spatial stream through the communication link;
- encoding and modulating the data packet based on the single modulation and coding scheme;
- precoding the data packet utilizing precoder information selected based upon channel state information and received from the receiving device to decompose the data packet via non-orthogonal, equal gain, decomposition into equal gain subchannels for transmission through the communication link;
- and
- transmitting the precoded data packet through the communication link.
A communication system to communicate via more than one spatial stream comprising;
- a modulation and coding scheme library comprising more than one modulation and coding scheme;
- a control module to receive a channel quality indicator associated with a communication link;
- a link adapter coupled with the control module and with the modulation and coding scheme library to select a single modulation and coding scheme based on the channel quality indicator from the more than one modulation and coding scheme for the more than one spatial stream to improve throughput across the more than one spatial stream;
- a transmission processor for transmitting a data packet through the communication link;
- and
- a uniform channel precoder to receive precoder information derived from channel state information associated with the communication link;
- wherein the control module is coupled with the uniform channel precoder and coupled with the transmission processor to encode and modulate the data packet based on the single modulation and coding scheme and to precode the data packet responsive to the single modulation and coding scheme utilizing the precoder information to decompose the data packet via non-orthogonal, equal gain, decomposition into equal gain subchannels for transmission through the communication link.
Dependencies are inferred from the claim text.