Title :
MIMO two-way relaying with transmit CSI at the relay
Author :
Ingmar Hammerstrom;Marc Kuhn;Celal Esli; Jian Zhao;Armin Wittneben;Gerhard Bauch
Author_Institution :
Communication Technology Laboratory, ETH Zurich, Sternwartstr. 7, CH-8092 Zurich, Germany
fDate :
6/1/2007 12:00:00 AM
Abstract :
Conventional half-duplex relaying schemes suffer from the loss in spectral efficiency due to the two channel uses required for the transmission from the source to the destination. Two-way relaying is an efficient means to reduce this loss in spectral efficiency by bidirectional simultaneous transmission of data between the two nodes. In this paper we study the impact of transmit channel state information at the relay in a MIMO two-way decode-and-forward relaying scheme. We investigate and compare two different re-encoding schemes at the relay. The first is based on superposition coding, whereas the second one is based on the bitwise XOR operation.
Keywords :
"Relays","MIMO","Decoding","Matrix decomposition","Propagation losses","Laboratories","Femtocell networks","Communications technology","Europe","Channel state information"
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2007. SPAWC 2007. IEEE 8th Workshop on
Print_ISBN :
978-1-4244-0954-9
Electronic_ISBN :
1948-3252
DOI :
10.1109/SPAWC.2007.4401421