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Okada Y.,Informadon and Communicadons Labs | Mochida E.,Informadon and Communicadons Labs | Yamamoto T.,Informadon and Communicadons Labs | Hamada Y.,Informadon and Communicadons Labs | And 2 more authors.
SEI Technical Review | Year: 2012

In recent years, mobile service providers are facing rapid increase in data traffic, and so they have much interest in picocells and femtocells which can significantly improve network capacity. Deploying picocells and femtocells, however, can potentially cause inter-cell interference in the case of co-channel operation. We have studied the interference suppression method using an array antenna system for 3GPP Long Term Evolution (LTE) uplinks based on minimum mean square error (MMSE) beamforming. This paper proposes a new method to calculate the MMSE weight in a resource block (RB) basis and shows some simulation results. Furthermore, we have successfully implemented the proposed method on a system-on-chip (SoC) and verified that it successfully suppresses interference in real time.

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