On the capacity of a class of multi-user interference channels

Two multiuser interference networks are considered. The first setup is the interfering multicast network, and the second is the cyclic interference channel. The interfering multicast network is a setup with two multicast channels using the same medium. The multicast channels interfere with each other. The sum capacity in the noisy interference regime, and the capactiy in the strong interference regime are established. It is shown that the interfering multicast network has strong interference for a larger set of channel parameters than what was previously obtained. The cyclic interference channel is a setup where each transmitter causes interference only to its neighboring receiver. Its capacity with strong interference is obtained. The noisy interference regime is also given as an extension of previous work in the fully connected interference channel.