Title :
Outage Analysis of Multi-Antenna DF Relay Systems with Finite Feedbacks over Nakagami-m Fading Channels
Author :
Liu, Zhen ; Wang, Xiaoxiang ; Zhang, Hongtao ; Song, Zhenfeng
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Some recent studies have focused on the performance of multi-antenna relay systems assuming that perfect channel state information at the transmitter(CSIT) or no CSIT of relay-destination link are available. However, there is still a lack of research on the performance of fixed relay networks with finite feedbacks. In this paper, we present the closed-form expression of outage probability for decode-and-forward (DF) multi-antenna relay networks with finite feedbacks over Nakagami-m fading channels, where relay retransmits decoded signal with transmit antenna selection or limited feedback beamforming. The moment generation function (MGF) of the combined signal-to-noise-ratio (SNR) at the destination is obtained, then the outage probabilities are derived by using numerical inversion of Laplace transform. Simulations are given to verify the correctness of the theoretical analysis.
Keywords :
Laplace transforms; Nakagami channels; antenna arrays; decoding; feedback; probability; relays; Laplace transform; Nakagami-m fading channels; channel state information at the transmitter; decode-and-forward; finite feedbacks; fixed relay networks; moment generation function; multiantenna DF relay systems; outage analysis; outage probability; signal-to-noise-ratio; Antenna feeds; Array signal processing; Channel state information; Closed-form solution; Decoding; Fading; Feedback; Relays; Signal generators; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-2518-1
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2010.5494198
