TY - JOUR
T1 - MIMO stochastic model and capacity evaluation of on-body channels
AU - Ghanem, K.
AU - Khan, I.
AU - Hall, P.
AU - Hanzo, L.
N1 - Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The improvement in terms of channel capacity provided by using a MIMO antenna system in personal area networks is investigated. Two on-body channel models derived in the 2.45 GHz frequency band are also presented and applied to two on-body links. The first proposed model uses, for each spatial subchannel, the same average values for the Rician factor, received power, and shadowing deviation. The second model encompasses the polarization loss in the on-body channels by utilizing different values of these parameters per each spatial subchannel. Furthermore, the joint correlation matrix is used instead of the classical Kronecker product. It is shown that the second model results in a better agreement of the achievable capacity with the measured channel. Also, the equal power and waterfilling power allocation schemes are compared in such on-body channels and it is shown that, adopting waterfilling instead of the equal power provides a higher capacity in the low SNR range while yielding the same achievable capacity in high SNR.
AB - The improvement in terms of channel capacity provided by using a MIMO antenna system in personal area networks is investigated. Two on-body channel models derived in the 2.45 GHz frequency band are also presented and applied to two on-body links. The first proposed model uses, for each spatial subchannel, the same average values for the Rician factor, received power, and shadowing deviation. The second model encompasses the polarization loss in the on-body channels by utilizing different values of these parameters per each spatial subchannel. Furthermore, the joint correlation matrix is used instead of the classical Kronecker product. It is shown that the second model results in a better agreement of the achievable capacity with the measured channel. Also, the equal power and waterfilling power allocation schemes are compared in such on-body channels and it is shown that, adopting waterfilling instead of the equal power provides a higher capacity in the low SNR range while yielding the same achievable capacity in high SNR.
UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-84861903572&md5=52f86080ec5f17c0ac2677f6f8e29ff9
U2 - 10.1109/TAP.2012.2194630
DO - 10.1109/TAP.2012.2194630
M3 - Article
AN - SCOPUS:84861903572
SN - 0018-926X
VL - 60
SP - 2980
EP - 2986
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 6
ER -