  A limited feedback-based interference alignment (IA) scheme is proposed for
the interfering multi-access channel (IMAC). By employing a novel
performance-oriented quantization strategy, the proposed scheme is able to
achieve the minimum overall residual inter-cell interference (ICI) with the
optimized transceivers under limited feedback. Consequently, the scheme
outperforms the existing counterparts in terms of system throughput. In
addition, the proposed scheme can be implemented with flexible antenna
configurations.
