We consider a multi-pair two-way massive multiple-input multiple-out (MIMO) relaying system over Rician fading channels, where multi-pair users exchange their information via the amplify-and-forward (AF) relaying equipped with large number of antenna arrays. Hardware impairments at the relay and imperfect channel state information (CSI) are taken into account. More specifically, we derive a new linear minimum mean-square error (MMSE) channel estimator for the proposed system. It is demonstrated that normalized mean square error (NMSE) is a constant when the pilot power grows to infinity. Moreover, the asymptotic spectral efficiency with maximum ratio processing is presented in closed-form and the power scaling laws are analyzed. Simulation results indicates that massive MIMO is capable of compensating the loss caused by hardware impairments, estimation error and Rician fading.
|Title of host publication||2018 IEEE Global Communications Conference (GLOBECOM): Proceedings|
|Number of pages||6|
|Publication status||Published - 21 Feb 2019|
|Name||IEEE Global Communications Conference (GLOBECOM): Proceedings|
Li, X., Matthaiou, M., Liu, Y., Ngo, H. Q., & Li, L. (2019). Multi-Pair Two-Way Massive MIMO Relaying with Hardware Impairments over Rician Fading Channels. In 2018 IEEE Global Communications Conference (GLOBECOM): Proceedings (IEEE Global Communications Conference (GLOBECOM): Proceedings). IEEE . https://doi.org/10.1109/GLOCOM.2018.8647480