Date Added: Jul 2010
This paper studies the value of allowing multiple transmitters to share all of the available bandwidth to concurrently transmit to a single receiver with multi-packet decoding capability. While such coordination can be bandwidth-efficient, it increases the density of interferers when many such multiple-access clusters exist in the network. On the other hand, orthogonal schemes such as FDMA may not be as bandwidth-efficient but operate at lower interferer densities due to orthogonalization. The authors take the first step towards understanding this trade-off. In particular, they analyze equidistant transmitters sending data using a coordination scheme based on the optimum strategy for a Gaussian multiple access channel.