TY - GEN
T1 - Impact of fading correlation and unequal branch gains on the capacity of diversity systems
AU - Shao, Joshua W.
AU - Alouini, Mohamed Slim
AU - Goldsmith, Andrea J.
PY - 1999
Y1 - 1999
N2 - We investigate the effect of fading correlation and branch gain imbalance on the Shannon capacity of diversity systems in conjunction with adaptive transmission techniques. This capacity provides the theoretical upper bound for the spectral efficiency of adaptive transmission schemes. We obtain closed-form expressions for this capacity for Rayleigh fading channels under four adaptation policies: optimal power and rate adaptation (opra), optimal rate adaptation with constant power (ora), truncated channel inversion with fixed rate (tifr), and complete channel inversion with fixed rate (cifr). We give numerical examples illustrating the main trends and offer comparisons on the behavior of opra, ora, tifr, and cifr under variation of different parameters.
AB - We investigate the effect of fading correlation and branch gain imbalance on the Shannon capacity of diversity systems in conjunction with adaptive transmission techniques. This capacity provides the theoretical upper bound for the spectral efficiency of adaptive transmission schemes. We obtain closed-form expressions for this capacity for Rayleigh fading channels under four adaptation policies: optimal power and rate adaptation (opra), optimal rate adaptation with constant power (ora), truncated channel inversion with fixed rate (tifr), and complete channel inversion with fixed rate (cifr). We give numerical examples illustrating the main trends and offer comparisons on the behavior of opra, ora, tifr, and cifr under variation of different parameters.
UR - http://www.scopus.com/inward/record.url?scp=0032663231&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0032663231
SN - 0780354354
T3 - IEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
SP - 2159
EP - 2163
BT - IEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
T2 - IEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
Y2 - 19 September 1999 through 22 September 1999
ER -