Improper Gaussian Signaling for the Two-user Broadcast Channel Treating Interference as Noise
| Title | Improper Gaussian Signaling for the Two-user Broadcast Channel Treating Interference as Noise |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Lameiro, C., I. Santamaría, and P. J. Schreier |
| Conference Name | IEEE Int. Conference on Acoustics, Speech, and Signal Processing (ICASSP) |
| Month Published | May |
| Conference Location | Brighton, UK |
| Abstract | Improper Gaussian signaling (IGS) has been shown to enlarge the rate region achievable by conventional proper Gaussian signaling (PGS) schemes in several interference-limited multiuser networks. In this work, we consider the 2-user broadcast channel (BC) when treating interference as noise “TIN” at every receiver. For this scenario, we derive a closed-formcharacterization of the rate region boundary with IGS. ThePareto-optimal points are achieved when at least one of the users employs maximally improper (rectilinear) signals. Differently from other interference-limited networks, our results show that IGS always outperforms PGS for the 2-user BC with TIN. Furthermore, IGS also enlarges the PGS rate region with time-sharing for this scenario. |
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