Title :
Joint MMSE transceiver design in non-regenerative MIMO relay systems with covariance feedback
Author :
Gopal, Lenin ; Rong, Yue ; Zang, Zhuquan
Author_Institution :
Dept. of Electr. & Comput. Eng., Curtin Univ., Miri, Malaysia
Abstract :
In this paper, the problem of transceiver design in a non-regenerative MIMO relay system is addressed, where linear signal processing is applied at the relay and destination to minimize the mean-squared error (MSE) of the signal waveform estimation. The optimal structure of the relay precoding matrix is derived with the assumption that the relay knows the channel covariance information of the relay-destination link and the full channel state information (CSI) of the source-relay link. Simulation results demonstrate that the proposed scheme outperforms conventional relay algorithms, and its performance is comparable to the optimal relay algorithm using the full relay-destination CSI.
Keywords :
MIMO communication; channel coding; covariance matrices; feedback; least mean squares methods; precoding; radio transceivers; signal processing; CSI full relay-destination; channel covariance information; covariance feedback; full channel state information; joint MMSE transceiver design; linear signal processing; mean-squared error minimization; nonregenerative MIMO relay systems; optimal relay algorithm; relay precoding matrix; relay-destination link; source-relay link; Bit error rate; Covariance matrix; MIMO; Optimization; Relays; Symmetric matrices; Transceivers; Covariance Feedback; MIMO relay; MMSE;
Conference_Titel :
Communications (APCC), 2011 17th Asia-Pacific Conference on
Conference_Location :
Sabah
Print_ISBN :
978-1-4577-0389-8
DOI :
10.1109/APCC.2011.6152821