By Daniel Ferguson
Проектирование и построение автомобильных акустических систем продолжают быть комбинацией искусства и науки.
В этой книге описаны 20 полных иллюстрированных проектов акустических систем для разных видов транспортных средств.
Шаг за шагом, от проекта до монтажа.
Доп. информация: Язык: англ.
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Extra info for Car stereo speaker project illustrated
The macro diversity used in soft handover of the CDMA mobile communication systems is the first use of CoMP technology in actual communication systems. Past research into distributed antenna systems laid the foundation for today’s CoMP technology. The generalized distributed antenna system (GDAS) was the first time the concept of CoMP technology was introduced in the distributed antenna system. Capacity theorems for the relay channel first introduced the concept of cooperative communication among cellular areas, and it is the prototype for modern multipoint collaboration communication technology, which marked the advent of multipoint collaboration communication for the entire cellular mobile communication system.
Therefore, there is no noise or interference enhancement due to relay, compared with the repeater. Relays can have some intelligence built into them. For example, the transmit power of the relay could be controlled, and a relay could be activated only when users were in the coverage area of it. A relay doing just physical layer processing is a Layer 1 relay. 20 Deployment of relay nodes. The radio interface between the DeNB and the RN is called the Un interface. Uu is the air interface between the UE and the RN.
Similarly, it receives signals from the UEs in the UL and forwards them to the eNB after amplification. Thus, the repeater increases the coverage as the link budget needs to be satisfied between the eNB and the repeater and between the repeater and the UE, rather than between the eNB and the UE. This kind of amplifying and forwarding repeater adds noise to the signal in the process. In general, a relay is a smarter repeater that regenerates and amplifies only the relevant parts of the received signal based on the subset of users targeted by the relay.
Car stereo speaker project illustrated by Daniel Ferguson