name: PA
full_form: Pedestrian A/Paging Attempt/Power Amplifier
context: coded to 10 bit wordlength and exposed to the E-DPCCH channel coding. Alternatively a toggled NDI similar to HS-SCCH can be used â subsequent packets get NDI=0 and NDI=1 respectively for somewhat added robustness against soft buffer corruption. In both cases a 10-time repetition of the NDI bit can be used before E-DPCCH block coding. It would be possible to also carry some E-TFCI bits or even a HARQ process number as implicit NDI, if such additional information is deemed useful. Figure 11.4 Reduced E-DPCCH scheme â E-DPCCH transmitted simultaneously with the initial transmission attempt. The E-DPCCH content can be reduced to a New Data Indicator only. The need to assure a proper decoding performance of the E-DPCCH has been emphasized repeatedly in the study. The time-multiplex scheme of Figure 11.5 seems to fit into this requirement very well. On the other hand, if the E-DPDCH power is scaled down to zero in the code-multiplex scheme before any power scaling is applied to E-DPCCH,
description: A Power Amplifier (PA) is an electronic device that increases the power of a signal. It is used in telecommunications systems to amplify signals before transmission, ensuring they have sufficient strength to reach their destination.
explanation: The concept of a Power Amplifier (PA) falls under Hardware because it is a physical electronic component used to amplify signals within a telecommunications system.
section_title: 9.2.1.2	Hybrid ARQ performance in soft handover
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