Sum Rate of MIMO Two-way Relaying with Imperfect CSI



Ali Y. Panah and Robert W. Heath Jr.

IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
, March 14 - 19, 2010 (Dallas, Texas)


In this paper we analyze pilot-aided channel estimation for the multiple-input multiple-output amplify-and-forward two-way relay channel. We use a linear minimum mean-square estimator for estimating the composite channel at each communicating terminal and by using the notion of ``worst-case noise" we derive lower-bounds for the transmission sum-rate in both directions of the established bi-directional relay link.


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