Communicating over white Gaussian interference networks with feedback

White Gaussian interference networks with K messages, T transmitters and R receivers are considered. The messages are transmitted through the network in a point-to-point manner, i.e., each message is encoded by exactly one transmitter and is destined for exactly one receiver. It is further assumed that feedback is available so that each transmitter sees the outputs of the receivers to which it is sending messages. Communication strategies are developed that perform well for such networks. For multiple-access channels (K = T, R = 1) with equal transmitter powers the strategies achieve the sum-rate capacity if the powers are beyond some threshold. For interference channels (K = T = R) numerical results show that the strategies can significantly enlarge the no-feedback capacity region.