SINR analysis and power control for downlink W-CDMA and multiuser OFDM systems. - Page 30 |
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3 I R pioti is the SIR o f plot signal o f m obile terminal i, Pi is the transm ission pow er o f
terminal i and Ptotai is the total transm ission pow er o f the base station.
Furtherm ore, a pow er control scheme based on the carrier-to-interference ratio (CIR)
was recently proposed in [45], The goal o f this power control schem e was to achieve
global CIR balancing, w hich means that the CIR value o f all m obile term inals is the
same. U nder the globe CIR balancing condition, the transm ission pow er o f m obile
terminal i in cell k can be found through
where Cm is defined as
i r
n — V ' kz’n h i 2—i h rn ^ >
n = l
and where Qn is the total transm ission power o f base station n and Gki,n denotes the
downlink gain from base station n to m obile terminal i in cell k. Furtherm ore, A* denotes
the m axim um absolute value o f eigenvalues o f the downlink link-gain m atrix whose
( i,j) entry is defined as
Ni p
k=l
where Ni is the total m obile terminals in cell i.
In [41], [45] and [35], the selection o f transm ission pow er o f each m obile terminal
depends on SIR, in w hich the effect o f term inal noise is assum ed to take the averaged
17
Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
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| Title | SINR analysis and power control for downlink W-CDMA and multiuser OFDM systems. - Page 30 |
| Repository email | cisadmin@lib.usc.edu |
| Full text | 3 I R pioti is the SIR o f plot signal o f m obile terminal i, Pi is the transm ission pow er o f terminal i and Ptotai is the total transm ission pow er o f the base station. Furtherm ore, a pow er control scheme based on the carrier-to-interference ratio (CIR) was recently proposed in [45], The goal o f this power control schem e was to achieve global CIR balancing, w hich means that the CIR value o f all m obile term inals is the same. U nder the globe CIR balancing condition, the transm ission pow er o f m obile terminal i in cell k can be found through where Cm is defined as i r n — V ' kz’n h i 2—i h rn ^ > n = l and where Qn is the total transm ission power o f base station n and Gki,n denotes the downlink gain from base station n to m obile terminal i in cell k. Furtherm ore, A* denotes the m axim um absolute value o f eigenvalues o f the downlink link-gain m atrix whose ( i,j) entry is defined as Ni p k=l where Ni is the total m obile terminals in cell i. In [41], [45] and [35], the selection o f transm ission pow er o f each m obile terminal depends on SIR, in w hich the effect o f term inal noise is assum ed to take the averaged 17 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. |
