ennas. Note that the UE receives only 10.10 Multi-antenna techniques in 3GPP LTE-advanced the information about its own precoding matrix. The scheduled UE then decodes the information utilizing the common reference signal in conjunction with the precoding information obtained from the control signaling. The UE generates the PMI/CQI feedback without any knowledge of other simultaneously scheduled UEs. Thus, there could be a mismatch between the UE's CQI report and the actual CQI experienced due to lack of knowledge of interference caused by other UEs scheduled simultaneously. In 3GPP LTE, in order to allow the use of higher-order modulation schemes such as 16 QAM or 64 QAM without adding more complexity in the UE, the transmit-power level for each UE is adjusted in a long-term manner. The per-UE pre-configured power level is hard to maintain in MU-MIMO transmission mode, since the eNB power amplifier has to support multiple UEs scheduled on the same time-frequency resource. Single-bit signaling is used to indicate whether a 3 dB power reduction with respect to the per-UE configured power-level is necessary, if a UE is operating in MU-MIMO transmission mode. Codebook-based beamforming is supported through channel-dependent precoding with rank-1 transmission. Therefore, the UEs can be configured for the single-rank channel-dependent precoding scheme and report precoder vectors accordingly to the eNB. A critical functionality related to MU-MIMO is the need of the UE to derive the power ratio between the reference signals and the power per data resource element and antenna that is applied to its own transmission in order to assist demodulation. The derivation of the power ratio is important since multiple UEs share the same time- frequency resources and thus may share the finite power of the power amplifiers. This can result in power fluctuations during transmission to a particular UE. Since the UE is not mandated to blindly estimate this power ratio for all different modulations, the power fluctuations need to be sig