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公开(公告)号：US09825753B2
公开(公告)日：2017-11-21
申请号：US14881613
申请日：2015-10-13
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Rittwik Jana , Vaneet Aggarwal , Christopher W. Rice , Nemmara K. Shankaranarayanan , Melissa Duarte , Ashutosh Sabharwal
CPC classification number: H04L5/1461 , H04B15/00 , H04L5/14 , H04L5/143 , H04L27/265
Abstract: Disclosed herein are systems, methods, and computer-readable storage media for enabling improved cancellation of self-interference in full-duplex communications, or the transmitting and receiving of communications in a single frequency band without requiring time, frequency, or code divisions. The system estimates the signal strength and phase of a self-interference signal, generates a cancellation signal based on this estimate, then uses the cancellation signal to suppress the self-interference before sampling received analog signal. After applying the cancellation signal, the system samples and digitizes the remaining analog signal. The digitized signal is then subjected to additional digital cancellation, allowing for extraction of the desired signal.
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公开(公告)号：US09166766B2
公开(公告)日：2015-10-20
申请号：US14492588
申请日：2014-09-22
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Rittwik Jana , Vaneet Aggarwal , Christopher W. Rice , Nemmara K. Shankaranarayanan , Melissa Duarte , Ashutosh Sabharwal
CPC classification number: H04L5/1461 , H04B15/00 , H04L5/14 , H04L5/143 , H04L27/265
Abstract: Disclosed herein are systems, methods, and computer-readable storage media for enabling improved cancellation of self-interference in full-duplex communications, or the transmitting and receiving of communications in a single frequency band without requiring time, frequency, or code divisions. The system estimates the signal strength and phase of a self-interference signal, generates a cancellation signal based on this estimate, then uses the cancellation signal to suppress the self-interference before sampling received analog signal. After applying the cancellation signal, the system samples and digitizes the remaining analog signal. The digitized signal is then subjected to additional digital cancellation, allowing for extraction of the desired signal.
Abstract translation: 这里公开的是用于实现全双工通信中的自干扰的改进的消除或在单个频带中的通信的发送和接收而不需要时间，频率或代码划分的系统，方法和计算机可读存储介质。 该系统估计自干扰信号的信号强度和相位，基于该估计产生消除信号，然后在采集接收的模拟信号之前使用消除信号来抑制自干扰。 应用消除信号后，系统对剩余的模拟信号进行采样和数字化。 然后对数字化信号进行附加数字消除，允许提取所需信号。
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公开(公告)号：US10924256B2
公开(公告)日：2021-02-16
申请号：US15818193
申请日：2017-11-20
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Rittwik Jana , Vaneet Aggarwal , Christopher Rice , Nemmara K. Shankaranarayanan , Melissa Duarte , Ashutosh Sabharwal
Abstract: Disclosed herein are systems, methods, and computer-readable storage media for enabling improved cancellation of self-interference in full-duplex communications, or the transmitting and receiving of communications in a single frequency band without requiring time, frequency, or code divisions. The system estimates the signal strength and phase of a self-interference signal, generates a cancellation signal based on this estimate, then uses the cancellation signal to suppress the self-interference before sampling received analog signal. After applying the cancellation signal, the system samples and digitizes the remaining analog signal. The digitized signal is then subjected to additional digital cancellation, allowing for extraction of the desired signal.
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