Interference Alignment with Rate Splitting in a Three-user Interference Channel with a Cognitive Transmitter

Provided by: Institute of Electrical and Electronics Engineers
Topic: Mobility
Format: PDF
This paper proposes a new strategy combining Interference Alignment (IA) and rate splitting for a three user interference channel with a cognitive transmitter. Although a half of available dimensions are sacrificed to align interference signals from other users in conventional IA, the proposed scheme recycles the sacrificed dimensions with the help of a cognitive transmitter. The achievable rate region and generalized degrees of freedom are derived. Compared with conventional IA, the proposed scheme improves achievable rate and generalized degrees of freedom.

Find By Topic