] and spurious emissions) and reception (e.g., Adjacent Channel Selectivity [ACS], blocking) RF requirements. The relative power difference between the adjacent component carriers can be an issue if the guard sub-carriers between the two component carriers are utilized for data transmission. The symmetrical property of the spectral mask may help in the design of transmit/receive filters. The carrier aggregation will also change some radio resource management requirements, considering that a terminal will have to conduct measurements on several carriers at the same time. In practice, a mobile station is typically able to measure two carriers at the same time in active mode. The mobile station's battery consumption may be increased due to the activation of several carriers which need to be continuously monitored and measured. The MS power consumption increases with an increasing number of component carriers. The increased number of component carriers implies that the MS will have to monitor more downlink control channels. While the cost and complexity of some hardware and software components may only depend on the total bandwidth, the cost/complexity, in general, would scale with the number of component carriers. As mentioned earlier, there are two types of carrier aggregation: contiguous; and non-contiguous. Non- contiguous carrier aggregation can be in the form of intra-band or inter-band. The different types of carrier aggregation will result in different deployment scenarios. In the case of contiguous carrier aggregation and intra-band carrier aggregation, if each component carrier has the same transmit power, The Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the filtered mean power centered on the assigned channel frequency to the filtered mean power centered on an adjacent channel frequency. "Adjacent Channel Selectivity (ACS) is a measurement of a receiver's ability to process a desired signal while rejecting a strong signal in an adjacent frequency channel. ACS is defined as the ratio of the r