Title :
Multihop MIMO Relay Networks with ARQ
Author :
Xie, Yao ; Gündüz, Deniz ; Goldsmith, Andrea
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA
Abstract :
A multiple antenna multihop relay network consisting of a source, a relay, and a destination node, is considered. The diversity-multiplexing-delay tradeoffs (DMDT) for various multihop ARQ protocols are obtained. It is shown that the tradeoff region is limited by the performance of the weakest link, and hence the optimal ARQ protocol should balance the link performances by allocating the ARQ rounds among all links. Based on this argument, a variable block-length (VBL) ARQ protocol is proposed and its DMDT-optimality is shown.
Keywords :
MIMO communication; antenna arrays; automatic repeat request; multiplexing; DMDT-optimality; diversity-multiplexing-delay tradeoffs; multihop ARQ protocols; multihop MIMO relay networks; multiple antenna multihop relay network; optimal ARQ protocol; variable block-length ARQ protocol; Automatic repeat request; Decoding; Delay; MIMO; OFDM modulation; Performance analysis; Protocols; Relays; Spread spectrum communication; Transmitters;
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-4148-8
DOI :
10.1109/GLOCOM.2009.5426214
