Reconfigurable antennas for performance enhancement of interference networks employing interference alignment

摘要

By using reconfigurable antenna based pattern diversity, an optimal channel can be realized in order to maximize the distance between two subspaces, thereby increasing sum-rate. The inventors show the benefits of pattern reconfigurability using real-world channels, measured in a MIMO-OFDM interference network. The results are quantified with two different reconfigurable antenna architectures. An additional 47% gain in choral distance and 45% gain in sum capacity were achieved by exploiting pattern diversity with IA. Due to optimal channel selection, the performance of IA can also be improved in a low SNR regime.

主权项

1. A system with increased sum capacity for k users, k>1, of an interference network employing interference alignment as the interference management scheme, said system comprising a plurality of reconfigurable antennas that offer pattern diversity, said plurality of reconfigurable antennas implementing said interference alignment scheme, wherein an interference channel between a first reconfigurable antenna and a second reconfigurable antenna is optimized to maximize a distance between interference and desired signal space.