Optimizing spectral shape under general spectrum emission mask constraints

New radio access technologies are being developed under the scope of e.g. IMT-Advanced that provide high data rate local area wireless access with reduced infrastructure costs compared to traditional cellular technologies. One challenge in such a scenario is the adjacent channel interference that arises between uncoordinated cellular communication network deployments. For example, the adjacent channel leakage from a wide-band base station (BS) transmission may block the access from user equipment (UE) in the vicinity. We present a novel transmission scheme that optimizes the own link capacity by tuning the power spectral density (PSD) of an OFDM signal under general constraints on adjacent channel leakage. In a possible use case the proposed scheme would allow access for closeby adjacent channel UEs at a minimum penalty on the inband capacity.