公开(公告)号：US09525453B2

公开(公告)日：2016-12-20

申请号：US14300290

申请日：2014-06-10

Applicant: Apple Inc.

Inventor： Konstantinos Sarrigeorgidis ,  Tarik Tabet ,  Syed A Mujtaba

IPC: H04L27/00 ,  H04B1/54 ,  H04B1/12

CPC classification number: H04B1/54 ,  H04B1/12 ,  H04B1/123 ,  H04B1/525

Abstract: A transceiver device may include a transmit path that generates a modulated transmit signal based on a baseband signal, and a receive path that receives a receive signal, which is subject to third-order order distortion caused by intermodulation noise resulting from a continuous wave blocker intermodulating with transmit leakage from the transmit path. The transceiver may also include a compensation path that models portions of the transmit path and the receive path, and generates a replica signal representative of the third-order order distortion according to at least a specified function and the modeled portions of the transmit path and the receive path. The compensation path also filters the replica signal and subtracts the filtered replica signal from the receive signal to eliminate the third-order order distortion caused by the intermodulation noise. The filtering of the replica signal may be performed by programmable finite impulse response filters.

Abstract translation: 收发器设备可以包括基于基带信号生成调制的发送信号的发送路径和接收接收信号的接收路径，该接收信号受到由连续波阻塞器互调产生的互调噪声引起的三阶失真 来自发射路径的发射泄漏。 收发机还可以包括对发送路径和接收路径的部分进行建模的补偿路径，并且根据至少一个指定的功能和发送路径的建模部分和生成表示三阶失真的副本信号， 接收路径。 补偿路径还对复制信号进行滤波，并从接收信号中减去滤波后的复制信号，以消除由互调噪声引起的三阶失真。 可以通过可编程有限脉冲响应滤波器来执行复制信号的滤波。