TY - GEN
T1 - On the distributed space-time signal design for a large number of relay terminals
AU - Uysal, Murat
AU - Canpolat, Onur
PY - 2005
Y1 - 2005
N2 - We study the asymptotic behavior of a cooperative scheme operating in amplify-and-forward (AF) mode when the number of relay terminals tends to infinity. An optimal code design rule is derived through the investigation of pairwise error probability (PEP) expression. The design rule is based on an Euclidean-distance-type metric including some scaling terms due to different path loss and shadowing effects associated with underlying relay links. Since the design criterion is channel-dependent, it does not allow itself for a practical code design. However, we further demonstrate that " classical" Euclidean distance can be used as a sub-optimal solution for realizing cooperative diversity advantages which we further verify through our simulation study. Our simulation results also indicate that distributed space-time codes based on Euclidean distance yield good results even for a small number of relays.
AB - We study the asymptotic behavior of a cooperative scheme operating in amplify-and-forward (AF) mode when the number of relay terminals tends to infinity. An optimal code design rule is derived through the investigation of pairwise error probability (PEP) expression. The design rule is based on an Euclidean-distance-type metric including some scaling terms due to different path loss and shadowing effects associated with underlying relay links. Since the design criterion is channel-dependent, it does not allow itself for a practical code design. However, we further demonstrate that " classical" Euclidean distance can be used as a sub-optimal solution for realizing cooperative diversity advantages which we further verify through our simulation study. Our simulation results also indicate that distributed space-time codes based on Euclidean distance yield good results even for a small number of relays.
KW - Cooperative diversity
KW - Fading channels
KW - Pairwise error probability
KW - Space-time codes
UR - http://www.scopus.com/inward/record.url?scp=24944447564&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24944447564&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2005.1424643
DO - 10.1109/WCNC.2005.1424643
M3 - Conference contribution
AN - SCOPUS:24944447564
SN - 0780389662
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 990
EP - 994
BT - 2005 IEEE Wireless Communications and Networking Conference, WCNC 2005
T2 - 2005 IEEE Wireless Communications and Networking Conference, WCNC 2005: Broadband Wirelss for the Masses - Ready for Take-off
Y2 - 13 March 2005 through 17 March 2005
ER -