name: ACS
full_form: Adjacent Channel Selectivity
context: emission mask (red) The values for time-dilated UMTS carriers are based on measurement in adjacent UMTS carrier and are given for 2.5 MHz and 1.25 MHz time-dilated UMTS carriers respectively. Various centre-to-centre separations between UMTS and time-dilated UMTS carriers are considered. A simple UE ACS model is given below and similar to the models, the ACS values for the UMTS carrier are based on the presence of a time-dilated UMTS carrier in the adjacent channel. The UE ACS values are shown for various centre-to-centre separations between UMTS and time-dilated UMTS carriers. The UMTS ACS value is ~50 dB, which is significantly better than the standardized minimum value of 33 dB. The ACS model does not, however, include possible improvements, such as, employing advanced receivers (e.g. interference cancellation capable receivers, Type 3i). Nevertheless, it should be emphasized that the and UE ACS models used for these simulations represent very good radios that are significantly
description: Adjacent Channel Selectivity (ACS) is a measure of a receiver's ability to reject signals in adjacent channels. In the context of UMTS carriers, ACS values are determined based on the presence of a time-dilated UMTS carrier in the adjacent channel. The UE ACS model provides values for various centre-to-centre separations between UMTS and time-dilated UMTS carriers, with a minimum standardized value of 33 dB.
explanation: ACS is classified as a Measurement because it quantifies the performance of a receiver in rejecting signals from adjacent channels. The context highlights the importance of ACS values in evaluating the impact of adjacent channel interference on receiver performance.
section_title: 6.2.2.2.1	Inter-carrier leakage
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