Cognitive Cooperation for the Downlink of Frequency Reuse Small Cells

We develop and analyze a space time coded cooperative diversity protocol that achieves improved quality of service for mobile users in the downlink of small cells. The protocol, called cooperative frequency reuse (CFR), leverages the cellular frequency reuse concept to create space and frequency diversity among pairs of adjacent base stations. The CFR protocol, which is consistent with the halfduplex mode assumption, consists of two phases. During the first phase, each base station transmits symbols to it own user on its dedicated frequency band, while listening to the symbols intended to the users of the other base station on another frequency band. Cognitive cooperation is implemented in the second phase. Each base station transmits on the two frequency bands to the scheduled users in both base stations, by means of an appropriately chosen space time code. We construct a full rate The work has been supported by the Agence Nationale de la Recherche within the project ANR-09-VERS0: E...

• Type: Journal
• Year: 2011
• Where: EJASP
• Authors: Salam Akoum, Marie Zwingelstein-Colin, Robert W. Heath Jr., Mérouane Debbah
• Keywords: Base Stations, EJASP 2011, Frequency Bands, Frequency Reuse