Robert Roland Short

US Patent:

7492293, Feb 17, 2009

Filed:

Mar 28, 2007

Appl. No.:

11/692767

Inventors:

Robert Townsend Short - Vista CA, US
Ghobad Heidari-Bateni - San Diego CA, US
Layne Lisenbee - San Diego CA, US

Assignee:

Olympus Communication Technology of America, Inc. - San Diego CA

International Classification:

H03M 1/00

US Classification:

341123, 314 61

Abstract:

An analog-to-digital converter can use a variable sampling rate. By using a variable sampling rate analog-to-digital converter and an anti-aliasing filter lower sampling rates, and accordingly, generally lower power consumption may be achieved. For example, a lower sampling rate can be used when it is determined that no undesirable signals are present and a higher sampling period can be used when an undesirable signal is present. Determining the presence of an undesired signal can be based on signal-to-noise ratio, over-sampling, bit error rate, using a detector, etc. An undesirable signal can be any signal that is close in frequency to a signal of interest or a signal farther away in frequency that has a relatively high amplitude. Sampling rate can be varied in a binary fashion, stepwise, continuously, etc.

US Patent:

20060268960, Nov 30, 2006

Filed:

May 31, 2005

Appl. No.:

10/908905

Inventors:

Robert Short - Vista CA, US
David Denton - San Jose CA, US

Assignee:

COMMSTACK, INC - San Jose CA

International Classification:

H04B 1/00

US Classification:

375132000

Abstract:

Apparatus to frequency hop an orthogonal frequency division multiplexing access method using digital signal processing technique.

US Patent:

20210409083, Dec 30, 2021

Filed:

Jul 2, 2021

Appl. No.:

17/366251

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

International Classification:

H04B 7/06
H04B 1/713

Abstract:

Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.

US Patent:

20210258026, Aug 19, 2021

Filed:

Feb 25, 2021

Appl. No.:

17/185912

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

Assignee:

VIASAT, INC. - Carlsbad CA

International Classification:

H04B 1/00
H04B 1/04
H04L 27/26

Abstract:

Methods, systems, and devices for channelizing a wideband waveform for transmission on a spectral band comprising unavailable channel segments are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms when channels of a system bandwidth are unavailable for transmission. A transmitter may separate a first wideband signal into segments, with each segment a bandwidth corresponding to a channel of the system bandwidth, and may map the segments to the available channels. The transmitter may combine the mapped segments into a second wideband waveform and transmit the second wideband waveform using the available channels. A receiver may receive a first wideband signal waveform and may separate the first wideband signal waveform into segments, de-map the segments and combine the de-mapped segments into a second wideband waveform for demodulation. The techniques may be used to transmit and receive wideband waveforms over tactical data links.

US Patent:

20210111774, Apr 15, 2021

Filed:

Oct 10, 2019

Appl. No.:

16/598261

Inventors:

- Carlsbad CA, US
David C. Jacobs - Solana Beach CA, US
David J. Trusheim - Poway CA, US
Robert T. Short - Vista CA, US

International Classification:

H04B 7/06
H04B 1/713

Abstract:

Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.