Cooperation in Wireless Communications

In modern cellular systems, interference is one of the main obstacles limiting the communication capacity. One of the principal techniques to better control interference is cooperation among neighboring base stations. This will be part of the forthcoming LTE-Advanced cellular standard. We use information theory to characterize the channel capacity of downlink channels with cooperating base stations in the case of imperfect channel state information and in the case of exterior interference.

References:

• M. Wiese, H. Boche, I. Bjelaković und V. Jungnickel, “The Compound Multiple Access Channel with Partially Cooperating Encoders”, IEEE Trans. Inf. Theory, Bd. 57, Nr. 5, S. 3045–3066, 2011.
• M. Wiese und H. Boche, “The Arbitrarily Varying Multiple-Access Channel with Conferencing Encoders”, Proc. International Symposium on Information Theory (ISIT 2011), St. Petersburg, Russia, August 2011.