Title :
On uplink-downlink sum-MSE duality of multi-hop MIMO relay channel
Author :
Cirik, Ali Cagatay ; Khandaker, M.R.A. ; Yue Rong ; Yingbo Hua
Author_Institution :
Dept. of Electr. Eng., Univ. of California Riverside, Riverside, CA, USA
Abstract :
The uplink and downlink sum mean-squared error (MSE) duality for multi-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay channels is established, which is a generalization of several sum-MSE duality results. Unlike the previous results that prove the duality by computing the MSEs for each stream directly, we introduce an interesting perspective to the relation of the uplink-downlink duality based on the Karush-Kuhn-Tucker (KKT) conditions associated with uplink and downlink transceiver design optimization problems.
Keywords :
MIMO communication; amplify and forward communication; mean square error methods; optimisation; relay networks (telecommunication); Karush-Kuhn-Tucker conditions; multihop AF MIMO relay channel; multihop amplify-and-forward multiple-input multiple-output relay channels; uplink-downlink sum-MSE duality; uplink-downlink transceiver design optimization problems; Downlink; MIMO; Relays; Transceivers; Uplink; Vectors; Wireless communication; Amplify-and-forward; MIMO relay; duality;
Conference_Titel :
Signal Processing Advances in Wireless Communications (SPAWC), 2014 IEEE 15th International Workshop on
Conference_Location :
Toronto, ON
DOI :
10.1109/SPAWC.2014.6941634
