name: PSD
full_form: Power Spectral Density
context: The quality information for each stream consists of Recommended Transport Block Size (RTBS) and Recommended Modulation Format (RMF) fields. The 6 bits of the RTBS field for each stream are coded to 32 bits using a (32, 6) 1st order Reed-Muller code respectively. The coding procedure for each stream is performed according to section .2 shown in figure and figure 21B. Figure : Field coding of RTBS information bits for stream 1 Figure 21B: Field coding of RTBS information bits for stream 2 The RMF bit for stream 1, xrmf1,1 , is repetition coded to 16 bits to produce the bits . where nCQI = 48. The RMF bit for steam 2, xrmf2,1 , is repetition coded to 16 bits to produce the bits . where nCQI = 48.
description: Power Spectral Density (PSD) refers to the measurement of the distribution of power across different frequencies in a signal. In the context of UMTS systems, PSD is used to describe the power level of signals transmitted by NodeB. The PSD level can vary depending on factors such as the availability of additional power for time-dilated UMTS carriers or the sharing of total power between legacy UMTS and time-dilated UMTS systems.
explanation: The context explicitly states that PSD is a measurement used to describe the power levels of signals in a UMTS system. It quantifies the distribution of power across frequencies, making it a measurable quantity.
section_title: 6.1.1.1.2	Multi-carrier time-dilated UMTS in DL
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