Patent
Beamforming in mimo systems
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TLDR
In this paper, a beamforming method comprises transmitting a training sequence from a transmitter array employing a set of beamforming vectors from a beam-forming codebook, and a receive array employs a combining codebook to acquire channel state information from the received transmissions, and estimates a preferred beamforming vector and a preferred combining vector.Abstract:
A beamforming method comprises transmitting a training sequence from a transmitter array employing a set of beamforming vectors from a beamforming codebook. A receive array employs a combining codebook to acquire channel state information from the received transmissions, and estimates a preferred beamforming vector and a preferred combining vector. At least the preferred beamforming vector (and, optionally, the preferred combining vector) is transmitted back to the transmitter array.read more
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References
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Journal ArticleDOI
Grassmannian beamforming for multiple-input multiple-output wireless systems
TL;DR: A quantized maximum signal-to-noise ratio (SNR) beamforming technique is proposed where the receiver only sends the label of the best beamforming vector in a predetermined codebook to the transmitter.
Patent
Wireless communication system, wireless communication apparatus and wireless communication method
TL;DR: In this article, a wireless communication system is described that performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2).
Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems — Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands
TL;DR: In this paper, the IEEE standard 802.16 has been updated and expanded to allow for mobile sub-scrib er stations, which has been shown to improve the performance of wireless networks.
Patent
Multi-user MIMO-SDMA for finite rate feedback systems
TL;DR: In this paper, a multi-user MIMO downlink beamforming system with limited feedback is provided to enable precoding for multi-stream transmission, where a channel codeword (u i ) and one or more channel quality indicator values (CQI A, CQI B ) are computed at the user equipment ( 201.
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Multi-mode wireless devices having reduced-mode receivers
TL;DR: In this article, a wireless communications method in a wireless device having a transmitter configurable to transmit in at least one modulation mode other than that receivable by the wireless device is presented.
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