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Antenna News

Russia Requires WiFi Registration
While WiFi wasn’t as broadly unlicensed in Russia as it is in most other industrialized nations, your can not find wifi antenna anywhere a state regulator exempted indoor use in certain bands from registration. The Mass Media agency apparently believes that it has the authority to compel this, although there’s some doubt by observers as to whether it really falls in their purview.
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RF Antenna

How useful when you take of RF Antenna Products.
We provide a comprehensive range of RF Antenna Products that match the strict quality requirements of International market which has earned our company the distinct reputation of being a quality oriented Taiwan Exporter of RF Antenna Products. We are recognized as one of the leading traders in this sector due to our capability to supply impeccable RF Antenna Products to our customers. We laid our foot years back & ever since we are striving to deliver in our products innovation, competitive pricing & quality driven customer satisfaction.

With more than 10 years experience in OEM manufacturing and designing of RF antenna, AntennaDoor ambitious aim is to dominate Asia, Europe, and North America market and to become a front leader of antennas in these markets.

Speech Coder:
GSM make use of linear predictive coding (LPC). The use of LPC is to decrease the bit rate. The LPC offers parameters for a filter which mimics the vocal tract. The signals pass through speech coder leaving behind a residual signal. The signal is encoded at 13 kbps

GSM Network
GSM offers recommendations not requirements. GSM specifications do not address the hardware but define the functions and interface requirements in detail. The reason is to bind the designers as little as possible but still make it possible for the operators to buy different equipment from different suppliers. GSM network is divided into three major systems:

1) Mobile Station
The mobile station (MS) includes mobile equipment and a smart card known as Subscriber Identity Module (SIM). The SIM offers mobility so that the user can have access to subscribed services irrespective of a specific location. The SIM card can be inserting into another GSM terminal so that the user is able to receive calls at that terminal make calls from that terminal and receive other subscribed services.

2) Base Station Subsystem
The Base Station Subsystem consists of two parts, Base Transceiver Station (BTS) and Base Station Controller (BSC). These stations communicate across the standardized interface allowing operation between components made by different suppliers.

The Base Transceiver Station addresses the radio transceivers that defines a cell and handles the radio-link protocols with the Mobile Station. The Base Station Controller handles the radio resources for one or more BTSs. It manages radio-channel setup and frequency hopping. The BSC is the connection between the mobile station and the Mobile service Switching Center (MSC).

3) Network Subsystem
Network Subsystem’s central component is the Mobile services Switching Center (MSC). It work as normal switching node of the PSTN or ISDN and additionally offers all the functionality needed to handle a mobile subscriber such as authentication, registration, location updating and call routing to a roaming subscriber. These services are offered in conjunction with several functional entities which together form the Network Subsystem.

We ensure high quality RF Antenna products by subjecting our RF Antenna products to stringent quality control measures during each stage of production and while dispatch.

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