公开(公告)号：US09237043B1

公开(公告)日：2016-01-12

申请号：US14475931

申请日：2014-09-03

申请人： Raytheon Company

发明人： Mark J. Beals ,  David E. Mussmann

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08 ,  H04L25/03 ,  H04B1/12

CPC分类号： H04L25/03828 ,  H04B1/126 ,  H04B1/525

摘要： A multicarrier radio frequency (RF) transceiver implementing dynamic spectrum access (DSA) is capable of sensing a spectral environment and transmitting an RF signal at the same time. The transceiver can cancel an RF transmit signal component within a composite receive signal using a combination of analog and digital cancellation. In one embodiment, analog RF cancellation is performed to reduce the level of a transmit signal component of a composite receive signal before the signal reaches an RF receiver. The RF cancellation may be used to reduce the transmit signal component to a level that maintains the linear operation of the RF receiver. Digital cancellation may be performed to reduce transmit signal remnants within an output signal of the RF receiver. Digital cancellation may be performed on a subcarrier-by-subcarrier basis in some implementations.

摘要翻译： 实现动态频谱接入（DSA）的多载波射频（RF）收发机能够同时感测频谱环境和发射RF信号。 收发器可以使用模拟和数字消除的组合来消除复合接收信号内的RF发射信号分量。 在一个实施例中，执行模拟RF消除以在信号到达RF接收器之前降低复合接收信号的发射信号分量的电平。 RF取消可以用于将发送信号分量减小到维持RF接收机的线性操作的水平。 可以执行数字消除以减少RF接收机的输出信号内的发射信号残余。 在一些实现中，可以在逐副载波的基础上执行数字消除。