By Sergey A. Leonov, Alexander I. Leonov
This instruction manual serves as a accomplished, systematic connection with the key mathematical types utilized in radio engineering and communications, and provides machine simulation algorithms to aid the reader estimate parameters of radio structures. It presents the technical information essential to layout and learn radar, conversation, radio navigation, radio keep an eye on, digital intelligence and digital war platforms. Mathcad exercises, brought up within the instruction manual, can assist the reader to optimize radar method functionality research, and will be used to create personalized software program that greater solutions particular wishes.
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Additional info for Handbook of Computer Simulation in Radio Engineering, Communications and Radar
The AS carries all of the signalling and user data messages that relate to the access technology used across a specific interface in that part of the system. Across the radio interface, the AS protocols are the lower level protocols between the UE and the UTRAN, and between the UTRAN and the CN. The NAS carries the signalling messages and user data messages that are independent of the underlying access mechanism. These signalling and user data are passed between the UE and the CN and, conceptually, pass transparently through the UTRAN.
10 and is common to both the CS domain and the PS domain. 1. The UTRAN comprises all of the fixed network entities that are required to operate and control the AS, such as one or more radio network subsystems (RNSs), which are conceptually similar to the base station system (BSS) in the GSM system. The RNS comprises an RNC and one or more Nodes B. 10. This type of interconnection is not present in GSM and is a consequence of two things: first the desire to decouple the radio access from the CN, and second the need to support soft-handover in which a UE may be connected to more than one RNS at the same time.
In addition to establishing an RRC connection that is used by the various sources of signalling, the RRC protocol is also responsible for the creation of user plane connections, referred to as radio access bearers (RABs). The RABs are created to transport user plane information such as speech or packet data across the radio interface from the UE to the core network. More of the details of RABs are considered later in this chapter and in Chapter 11. The RRC protocol provides radio mobility functions including elements such as the control of soft-handover to same-frequency UMTS cells, hard-handover to other UMTS cells and hard-handover to other RAT cells such as GSM.
Handbook of Computer Simulation in Radio Engineering, Communications and Radar by Sergey A. Leonov, Alexander I. Leonov