In the present work, a multibeam satellite that employs aggressive frequencyreuse towards increasing the offered throughput is considered. Focusing on theforward link, the goal is to employ multi-antenna signal processing techniques,namely linear precoding, to manage the inter-beam interferences. In thiscontext, fundamental practical limitations, namely the rigid framing structureof satellite communication standards and the on-board per-antenna powerconstraints, are herein considered. Therefore, the concept of optimal framebased precoding under per-antenna constraints, is discussed. This consists inprecoding the transmit signals without changing the underlying framingstructure of the communication standard. In the present work, the connection ofthe frame based precoding problem with the generic signal processing problem ofconveying independent sets of common data to distinct groups of users isestablished. This model is known as physical layer multicasting to multipleco-channel groups. Building on recent results, the weighted fair per-antennapower constrained multigroup multicast precoders are employed for frame basedprecoding. The throughput performance of these solutions is compared tomulticast aware heuristic precoding methods over a realistic multibeamsatellite scenario. Consequently, the gains of the proposed approach arequantified via extensive numerical results.
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