IP Library Granted Patent US 9,755,692
Granted Patent B2
US 9,755,692 · App. 14/704,746 · Granted Sep 5, 2017

Systems and methods for phase noise mitigation

Inventors: Jung-Il Choi (Santa Clara, CA); Mayank Jain (Santa Clara, CA); Jeffrey Mehlman (Santa Clara, CA); Joseph Shalizi (Sunnyvale, CA)
Assignee: Kumu Networks, Inc.
H04B1/525H04B1/48H04B7/0413H04B2001/485
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Quick Facts
Patent No.
US 9,755,692
App. No.
14/704,746
Granted
Sep 5, 2017
Kind
B2
Abstract

A system for phase noise mitigated communication including a primary transmitter that converts a digital transmit signal to an analog transmit signal, a primary receiver that receives an analog receive signal and converts the analog receive signal to a digital receive signal, an analog self-interference canceller that samples the analog transmit signal, generates an analog self-interference cancellation signal based on the analog transmit signal, and combines the analog self-interference cancellation signal with the analog receive signal and a digital self-interference canceller that samples the digital transmit signal, generates a digital self-interference cancellation signal based on the digital transmit signal, and combines the digital self-interference cancellation signal with the digital receive signal.

Claims (13)

1. A system for phase noise mitigated communication comprising:

a primary transmitter, coupled to a digital transmit path of an electronic device, that converts a digital transmit signal received via the digital transmit path to an analog transmit signal, and transmits the analog transmit signal via an analog transmit path;

a primary receiver, coupled to a digital receive path of the electronic device, that receives an analog receive signal via an analog receive path, and converts the analog receive signal to a digital receive signal;

an analog self-interference canceller, coupled to the analog receive path and the analog transmit path; wherein the analog self-interference canceller samples the analog transmit signal, generates an analog self-interference cancellation signal based on the analog transmit signal, and combines the analog self-interference cancellation signal with the analog receive signal; and

a digital self-interference canceller, comprising an embedded pilot analyzer that detects an embedded pilot in the digital receive signal and analyzes the embedded pilot to determine phase noise data, the digital self-interference canceller coupled to the digital transmit path and the digital receive path; wherein the phase noise data is partially based on a self-interference component of the digital receive signal; wherein the digital self-interference canceller samples the digital transmit signal, generates a digital self-interference cancellation signal based on the digital transmit signal, and combines the digital self-interference cancellation signal with the digital receive signal;

wherein the digital self-interference canceller generates the digital self-interference cancellation signal according to a digital transform configuration; wherein the digital self-interference canceller adapts the digital transform configuration based on the phase noise data.

2. The system of claim 1 , wherein the primary receiver is an RF wireless receiver and the primary transmitter is an RF wireless transmitter.

3. The system of claim 1 , wherein the primary transmitter comprises a digital-to-analog converter and a frequency upconverter; wherein the primary receiver comprises an analog-to-digital converter and a frequency downconverter; wherein the frequency upconverter and the frequency downconverter share a local oscillator.

4. The system of claim 1 , wherein the analog self-interference canceller generates the analog self-interference cancellation signal by combining filtered, scaled, and delayed versions of the analog transmit signal.

5. The system of claim 1 , further comprising a secondary transmitter coupled to an output of the digital self-interference canceller and to the analog receive path; wherein the secondary transmitter converts an output of the digital self-interference canceller to a digitally sourced analog self-interference cancellation signal and combines the digitally sourced analog self-interference cancellation signal with the analog receive signal.

6. The system of claim 5 , wherein the output is the digital self-interference cancellation signal.

7. The system of claim 5 , wherein the primary transmitter, the secondary transmitter, and the primary receiver share a local oscillator.

8. The system of claim 7 , further comprising a secondary receiver coupled to the analog transmit signal path and coupled to an input to the digital self-interference canceller; wherein the secondary receiver samples the analog transmit signal to produce an analog-sourced digital signal.

Assignments (7)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2024
From: SHALIZI, JOSEPH
To: KUMU NETWORKS, INC.
Reel/Frame 066957/0190 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2024
From: JAIN, MAYANK
To: KUMU NETWORKS, INC.
Reel/Frame 066953/0589 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2024
From: CHOI, JUNG IL
To: KUMU NETWORKS, INC.
Reel/Frame 066953/0646 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2024
From: MEHLMAN, JEFFREY
To: KUMU NETWORKS, INC.
Reel/Frame 066957/0267 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2023
From: KUMU NETWORKS, INC.
To: QUALCOMM INCORPORATED
Reel/Frame 066090/0165 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2017
From: SHALIZI, JOSEPH
To: KUMU NETWORKS, INC.
Reel/Frame 042706/0429 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2015
From: CHOI, JUNG-IL; JAIN, MAYANK; MEHLMAN, JEFFREY
To: KUMU NETWORKS, INC.
Reel/Frame 035617/0905 →
Continuity (3)
Continuation 14460218 · Aug 14, 2014
Provisional Application 61865943 · Aug 14, 2013
Related Publication 20150236750A1 · Aug 20, 2015