Patent
Multiple-input, multiple-output (mimo) systems with multiple transmission modes
TLDR
In this paper, the authors propose techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI), which may include a partial-CSI transmission scheme that transmits a single data stream on each transmit antenna selected for use and a beam-forming scheme that allocates all transmit power to a single transmission channel having the best performance.Abstract:
Techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI). These schemes may include a partial-CSI transmission scheme that transmits a single data stream on each transmit antenna selected for use and a “beam-forming” transmission scheme that allocates all transmit power to a single transmission channel having the best performance. Each transmission scheme may provide good or near-optimum performance for a specific range of operating conditions (or operating SNRs). These multiple transmission schemes may then be combined in a piece-wise fashion to form a “multi-mode” transmission scheme that covers the full range of operating conditions supported by the MIMO system. The specific transmission scheme to be used for data transmission at any given moment would then be dependent on the specific operating condition experienced by the system at that moment.read more
Citations
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Patent
MIMO WLAN system
TL;DR: In this article, a multiple-access MIMO WLAN system that employs MIMI, OFDM, and TDD was proposed, which employs a channel structure with a number of configurable transport channels, supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities.
Patent
Multi-access terminal with capability for simultaneous connectivity to multiple communication channels
Patrick E. White,Nicolas Girard +1 more
TL;DR: In this article, an apparatus is disclosed for permitting a mobile terminal having multiple, heterogeneous network connections (e.g., multiple wired or wireless transceivers of various types) to set up and maintain virtual connections over multiple networks to either the same or to multiple destinations.
Patent
System and method for distributed input-distributed output wireless communications
TL;DR: In this article, a method is described for transmitting a training signal from each antenna of a base station to each of a plurality of client devices, each of the client devices analyzing each training signal to generate channel characterization data, and transmitting the characterization data back to the base station.
Patent
MIMO system with multiple spatial multiplexing modes
TL;DR: In this article, a MIMO system supports multiple spatial multiplexing modes for improved performance and greater flexibility, which may include (1) a single-user steered mode that transmits multiple data streams on orthogonal spatial channels to a single receiver, (2) a multi-user non-steered mode that transmissions from multiple antennas to multiple receivers without spatial processing at a transmitter, and (3) a multiuser steered and non-stacked mode that simultaneously transmits data streams from multiple receivers to multiple users.
Patent
Closed-loop mimo systems and methods
TL;DR: In this article, a closed loop MIMO (multiple input and multiple output) wireless communication system is presented in which vector or matrix weighting is employed using information fed back from receivers.
References
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Patent
Multiple-access multiple-input multiple-output (MIMO) communication system
TL;DR: In this article, the authors provide techniques to achieve better utilization of the available resources and robust performance for the downlink and uplink in a multiple-access MIMO system.
Patent
Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion
TL;DR: In this paper, the authors proposed a pre-weighting scheme to match the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.
Patent
Spatial division multiple access wireless communication systems
Roy Richard H,Bjorn Ottersten +1 more
TL;DR: In this paper, a method and apparatus for increasing the capacity and quality of wireless communication between a plurality of remote users and a base station is disclosed, where measurements from an array of receiving antennas at the base station are calculated and used to obtain the positions and velocities of the users.
Patent
Method and apparatus for utilizing channel state information in a wireless communication system
TL;DR: In this paper, the received signals are processed to derive channel state information (CSI) indicative of characteristics of a number of transmission channels used for data transmission, and the CSI is transmitted back to the transmitter unit.
Patent
Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
TL;DR: In this paper, a successive cancellation receiver processing technique is used to process the received signals and performs a number of iterations to provide decoded data streams for each iteration, input (e.g., received) signals for the iteration are processed to provide one or more symbol streams.