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Patent

Wireless Transmission with Channel State Perturbation

Amir K. Khandani
TLDR
In this paper, a channel codebook is generated by identifying a subset of antenna configurations from a plurality of antennas configurations of an antenna associated with a transmitter by transmitting a sequence of symbols from the transmitter to a receiver using the plurality of antenna configuration, wherein each antenna configuration provides a unique transmission characteristic to the receiver.
Abstract: 
Generating a channel codebook by identifying a subset of antenna configurations from a plurality of antenna configurations of an antenna associated with a transmitter by: transmitting a sequence of symbols from the transmitter to a receiver using the plurality of antenna configurations, wherein each antenna configuration provides a unique transmission characteristic to the receiver; receiving feedback from the receiver that identifies the subset of antenna configurations; and, generating channel codebook entries corresponding to the subset of antenna configurations; and, transmitting data from the transmitter to the receiver using the channel codebook.

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Citations
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Patent

Method and apparatus for coupling an antenna to a device

Paul Shala Henry, +5 more
TL;DR: In this paper, the authors describe a system that receives, by a feed point of a dielectric antenna, electromagnetic waves from a core coupled to the feed point without an electrical return path, and radiates a wireless signal responsive to the electromagnetic waves being received at the aperture.
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Backhaul link for distributed antenna system

Paul Shala Henry, +5 more
TL;DR: In this paper, a distributed antenna and backhaul system provide network connectivity for a small cell deployment using high-bandwidth, millimeter-wave communications and existing power line infrastructure, rather than building new structures, and installing additional fiber and cable.
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Farhad Barzegar, +5 more
TL;DR: In this article, a distributed antenna system is provided that frequency shifts the output of one or more microcells to a 60 GHz or higher frequency range for transmission to a set of distributed antennas.
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Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves

Mitchell Harvey Fuchs, +1 more
TL;DR: In this article, the authors describe a device that facilitates transmitting electromagnetic waves along a surface of a wire that facilitates delivery of electric energy to devices, and sensing a condition that is adverse to the electromagnetic waves propagating along the surface of the wire.
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Method and apparatus that provides fault tolerance in a communication network

Paul Shala Henry, +5 more
TL;DR: In this article, a system for detecting a fault in a first wire of a power grid that affects a transmission or reception of electromagnetic waves that transport data and that propagate along a surface of the first wire is described.
References
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Journal ArticleDOI

Quantization index modulation: a class of provably good methods for digital watermarking and information embedding

Brian Chen, +1 more
TL;DR: It is shown that QIM is "provably good" against arbitrary bounded and fully informed attacks, and achieves provably better rate distortion-robustness tradeoffs than currently popular spread-spectrum and low-bit(s) modulation methods.
Patent

Apparatus, and associated method, for facilitating antenna weight selection utilizing deterministic perturbation gradient approximation

Balaji Raghothaman, +1 more
TL;DR: In this paper, a deterministic perturbation gradient approximation technique is utilized in which perturbations are selected by a selector and applied, by an applicator, to antenna weighting elements.
Patent

Method and apparatus for improving the interrogation range of an RF-Tag

Howard D. Helms, +1 more
TL;DR: In this paper, a method for increasing the interrogation range of an RF tag in a radio communication system using RF Tags with two reflecting antenna elements was proposed. But the method was not suitable for the use of a large number of RF tags.
Patent

Resource allocation apparatus and method in an orthogonal frequency division multiple access communication system

Jacob Scheim, +1 more
TL;DR: In this article, a random index generator at the transmitter is forwarded to the receiver to enable the local generation of an exact copy of the list of indices generated at the transmitters, thus enabling the DL and UL at the receiver while minimizing the required control channel signaling.
Patent

Precoding scheme for transmitting data using optimally-shaped constellations over intersymbol-interference channels

Rajiv Laroia, +2 more
TL;DR: In this article, a precoding scheme for noise whitening on ISI channels is presented where the scheme permits any type of shaping and is compatible with trellis coding, and the resulting reduction in shaping gain is small and becomes negligible as the rate per 2D of the constellation increases.