TY - JOUR
T1 - Performance of differential modulation with wireless relays in Rayleigh fading channels
AU - Zhao, Qiang
AU - Li, Hongbin
PY - 2005/4
Y1 - 2005/4
N2 - We propose a new amplify-and-forward scheme amenable to differential modulation for cooperative systems with wireless relays. We derive closed-form expressions of the probability density function (PDF) of the signal-to-noise ratio (SNR) and average bit-error rate (BER) for the proposed scheme, and the analytical results are confirmed with numerical simulations. An asymptotic analysis reveals that the proposed cooperative scheme with one relay offers a diversity order approaching two in Rayleigh fading channels as the average SNR increases.
AB - We propose a new amplify-and-forward scheme amenable to differential modulation for cooperative systems with wireless relays. We derive closed-form expressions of the probability density function (PDF) of the signal-to-noise ratio (SNR) and average bit-error rate (BER) for the proposed scheme, and the analytical results are confirmed with numerical simulations. An asymptotic analysis reveals that the proposed cooperative scheme with one relay offers a diversity order approaching two in Rayleigh fading channels as the average SNR increases.
KW - Cooperative diversity
KW - Differential modulation
KW - Performance analysis
KW - Wireless relays
UR - http://www.scopus.com/inward/record.url?scp=17744380829&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17744380829&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2005.04026
DO - 10.1109/LCOMM.2005.04026
M3 - Article
AN - SCOPUS:17744380829
SN - 1089-7798
VL - 9
SP - 343
EP - 345
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 4
ER -