TY - CHAP
T1 - Wireless transmissions with combined gain relays over fading channels
AU - Tsiftsis, Theodoros A.
AU - Karagiannidis, George K.
AU - Kotsopoulos, Stavros A.
PY - 2006
Y1 - 2006
N2 - We present a dual-hop relayed wireless communication system where the gain of the relay, called combined gain relay (CGR), is produced after combining the channel state information from both hops, depending on the mean hop's signal-to-noise ratio (SNR). The proposed scheme can be efficiently applied in dual-hop transmissions with unbalanced mean SNRs due to the long-term fading effects produced by the movement of the user in the area served by the wireless network. The overall system performance is studied in Rayleigh fading channels. Closed-form expressions are derived for important system performance metrics, such as average end-to-end SNR, average error probability and outage probability. Furthermore, we investigate the CGR's average power consumption which in certain cases is lower compared to existed relays. Numerical results and simulations show an improvement in the end-to-end system performance.
AB - We present a dual-hop relayed wireless communication system where the gain of the relay, called combined gain relay (CGR), is produced after combining the channel state information from both hops, depending on the mean hop's signal-to-noise ratio (SNR). The proposed scheme can be efficiently applied in dual-hop transmissions with unbalanced mean SNRs due to the long-term fading effects produced by the movement of the user in the area served by the wireless network. The overall system performance is studied in Rayleigh fading channels. Closed-form expressions are derived for important system performance metrics, such as average end-to-end SNR, average error probability and outage probability. Furthermore, we investigate the CGR's average power consumption which in certain cases is lower compared to existed relays. Numerical results and simulations show an improvement in the end-to-end system performance.
KW - Average bit error probability (ABEP)
KW - Combined gain relay (CGR)
KW - Dual-hop transmissions
KW - Outage probability
KW - Rayleigh fading
UR - https://www.scopus.com/pages/publications/33845535836
U2 - 10.1007/0-387-31173-4_1
DO - 10.1007/0-387-31173-4_1
M3 - Book Chapter
AN - SCOPUS:33845535836
SN - 0387311718
SN - 9780387311715
T3 - IFIP International Federation for Information Processing
SP - 1
EP - 10
BT - Challenges in Ad Hoc Networking
A2 - Agha, K.
A2 - Guerin Lassous, I.
A2 - Pujolle, G.
ER -