On the Robustness of Spatial Modulation to I/Q Imbalance

Ahmed Helmy (1) , Marco Di Renzo (2) , Naofal Al-Dhahir (1)

1 UT Dallas - University of Texas at Dallas [Richardson]
2 L2S - Laboratoire des signaux et systèmes

We analyze the bit error rate performance of spatial modulation (SM)-based direct-conversion transceivers under transmit in-phase/quadrature (I/Q) imbalance. To investigate the impact of transmit I/Q imbalance on SM, we derive the signal-to-noise ratio loss due to I/Q imbalance impact compared with an ideal direct-conversion transceiver with no I/Q imbalance. Our analysis unveils the robustness of SM to transmit I/Q imbalance compared with conventional single-input multi-output transmissions, by relying more on the spatial domain.

Domaines: Réseaux et télécommunications [cs.NI]

Ahmed Helmy, Marco Di Renzo, Naofal Al-Dhahir. On the Robustness of Spatial Modulation to I/Q Imbalance. IEEE Communications Letters, 2017, 21 (7), pp.1485 - 1488. ⟨10.1109/LCOMM.2017.2677421⟩. ⟨hal-01879979⟩