Title :
Design of Non-Regenerative MIMO-Relay System with Partial Channel State Information
Author :
Je, Hui Won ; Lee, Byongok ; Kim, Soojong ; Lee, Kwang Bok
Author_Institution :
Sch. of Electr. Eng. & INMC, Seoul Nat. Univ., Seoul
Abstract :
Design strategy for non-regenerative multiple-input multiple-output (MIMO) relay system with partial channel state information (CSI) is developed. We assume that the CSI of the base station-relay link is fully known to the relay, while the CSI of the relay-mobile station link is not known except its channel statistics. Based on this model, weighting matrices to increase ergodic capacity is proposed for downlink and uplink MIMO-relay system, respectively, with the approximation for both the high and low signal-to-noise ratio (SNR) region. We also propose a switching scheme to cover the intermediate SNR region. Numerical results show that the proposed scheme outperforms the conventional one especially when the SNR becomes high.
Keywords :
MIMO communication; channel capacity; matrix algebra; mobile radio; telecommunication links; base station-relay link; channel statistics; ergodic capacity; multiple-input multiple-output relay system; nonregenerative MIMO-relay system; partial channel state information; relay-mobile station link; signal-to-noise ratio region; switching scheme; weighting matrices; Channel state information; Costs; Decoding; Delay; Downlink; MIMO; Power system relaying; Relays; Signal to noise ratio; Statistics;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.833
