non-zero value for a non- zero-power CSI-RS to ensure that the power offset specified by the RRC parameter powerControlOffsetSS is satisfied. Other parameters k', l', wf(k'), and wt(l') are given in Table 4.2 where each pair (k,l) corresponds to a CDM group of size 1 (no CDM) or size 2, 4, or 8. The indices k' and l' are used to index the resource elements within a CDM group [6,8]. The time-domain locations lo = {0, 1, 13} and = {2, 3, 12} are defined relative to the start of a slot with the starting positions of a CSI-RS in a slot configured by the RRC para- meters provided in CSI-RS-ResourceMapping information element. The frequency-domain location of CSI-RS is determined by a bitmap signaled via the RRC parameter provided in Table 4.2: Various CSI-RS patterns (locations) within a slot [6]. Number of CSI-RS CDM Type (k,1) CDM Group Index j Ports Np Density p No CDM (ko,1o),(ko+4,1o),(ko+8,0) 0,0,0 1,0.5 No CDM (ko,lo) 1,0.5 FD-CDM2 (ko, 10) FD-CDM2 (ko,lo), (ko + 2,10) FD-CDM2 (ko,lo), ,(ko,lo+1) FD-CDM2 (ko, 10), (k1, (k2,lo), (k3, 10) 0,1,2,3 FD-CDM2 (ko,lo), (k1,10), (ko,1 + 1), (k1,10 + 1) 0,1,2,3 (ko,lo),(k1,10) (FD2,TD2) FD-CDM2 (ko,lo), (k1,10) (k2,10),(k3,10), (k4,lo), (k5,lo) 0,1,2,3,4,5 (ko,lo), (k1,10), (k2,10) 0,1,2 (FD2,TD2) 1,0.5 FD-CDM2 0,1,2,3,4,5,6,7 (ko,1 + 1), (k1,10 + 1), (k2,lo + 1), (k3, 10 +1) 1,0.5 (ko,lo), (k1,lo), (k2,lo), (k3, /0) 0,1,2,3 (FD2,TD2) (ko,lo), (k1,10) (k2,lo), (ko,10+1),(k1,10+ 1), (k2,lo + 1) 1,0.5 FD-CDM2 0,1,2,3,4,5,6,7,8,9,10,11 (ko,/1), (k1,/1), (k2,/1), (ko,/1 +1), (k1,/1 + 1), (k2,/1 + 1) 1,0.5 (ko,lo), (k1,10), (k2,10), (ko,/1), (k1,/1) (k2,/1) 0,1,2,3,4,5 (FD2,TD2) 1,0.5 (ko,10),(k1,10),(k2,10) 0,1,2 0,1,2,3 (FD2,TD4) (ko, 10 + 1), (k1,10 +1), (k2,10 + 1), (k3,10 + 1) 1,0.5 FD-CDM2 0,1,2,3,4,5,6,7, (kg,/1),(k1,1)),(k2,19), (k3,/1), 18,9,10,11,12,13,14,15 (ko,/1 + 1), (k1,/1 + 1), (k2,/1 + 1), (k3,/1 + 1) (ko,1o),(k1,1o),(k2,1o),(k3, 10), 1,0.5 0,1,2,3,4,5,6,7 (ko,/1), (k1,/1), (k2,/1), (k3,/1) (FD2,TD2) 1,0.5 (ko,lo), (k1,lo), (k2,lo), (k3, 10) 0,1,2,3 0,1,2,3 (