Paper Info
Title
Distributed Orthogonal and Quasi-Orthogonal Space-Time Block Code with Embedded AAF/DAF Matrix Elements in Wireless Relay Networks with Four Relays
Abstract
We consider cooperative networks of one source, four relays, and one destination. Each of them has a single antenna. The four relays use a proposed full rate distributed quasi orthogonal space time block code (DQOSTBC) scheme. If the channel state between the source and a relay is above a threshold, we select the elements of the DQOSTBC matrix to be the decode-and-forward (DAF) type; if it is below the threshold, the corresponding elements are the amplify-and-forward (AAF) type. Thus the proposed scheme is a DQOSTBC matrix with embedded adaptive DAF/AAF elements. The bit error rate (BER) simulation results show that the proposed DQOSTBC is approximately 7 dB better than the traditional DQOSTBC (all matrix elements are fixed as DAF type) at a BER of $$10^{-3}$$ 10 - 3 because traditional DQOSTBC loses full diversity due to errors in the information received. The proposed DQOSTBC is about 3 dB better than the rate 1/2 DOSTBC also proposed with adaptive DAF/AAF matrix elements at a BER of $$10^{-3}$$ 10 - 3 at the same spectral efficiency of 2 bits/s/Hz.
Year
DOI
Venue
2014
10.1007/s11277-013-1415-2
Wireless Personal Communications
Keywords
Field
DocType
dqostbc matrix,adaptive daf,daf matrix elements,proposed dqostbc,aaf element,wireless relay networks,quasi-orthogonal space-time block code,proposed scheme,matrix element,proposed full rate,daf type,traditional dqostbc,aaf matrix element
Wireless,Matrix (mathematics),Computer science,Communication channel,Real-time computing,Full Rate,Spectral efficiency,Space–time block code,Relay,Bit error rate
Journal
Volume
Issue
ISSN
75
2
1572-834X
Citations 
PageRank 
References 
2
0.38
16
Authors
2
Name
Order
Citations
PageRank
Shu-ming Tseng110129.74
Che-Ying Liao220.38