Some foreign experts of china cell phone jammer will attend the ...

For users, the emergence of its tri-band cell phonewill be the most far-reaching impact, and will be the most practical, since the use of tri-band mobile phone, roaming through the tri-band network, will greatly reduce dropped calls, mobile cell phoneapplications will be more free. Tri-band cell phoneallows users to freely communicate in 120 countries on five continents. CDMA band: CDMA 1X: CDMA 1X using spread spectrum rate SR1, meaning that the forward channel and reverse channel are used chip rate 1.2288Mbit / s direct line of single-carrier spread spectrum mode. Therefore, it can be easily and IS-95 (A / B) backward compatibility to achieve a smooth transition. The prospect analysis ofchina cell phone jammeris the only remaining issue in the meeting.
Because CDMA 1X coherent demodulation with a reverse, fast forward power control, transmit diversity, Turbo coding and other new technology, its capacity is much higher than the IS-95. Under the same conditions, the Mandarin sound business case, the capacity is roughly twice the IS-95 system. CDMA 1X network can carry voice services as a platform, or as a packet data wireless access to Internet hosting platform, that can provide traditional voice services, it can provide users with end to end packet transfer mode data services. CDMA 800MHZ: China Unicom CDMA network was first built in the time coincided with the transfer to the Great Wall Telecom China Unicom, China Unicom to make easy access to the 800MHz frequency band two-way 10M resources, which makes China Unicom has a valuable frequency resources. The experts are discussing the market prospect of china cell phone jammer.
Therefore, China Unicom will use its resources in the 800MHZ band built on the CDMA network. Unicom?s CDMA network is the construction and operation of the exclusive rights to operate can bring the market space is very obvious. With the support of CDMA network, China Unicom can achieve a number of new value-added data services, which may win more CDMA users. Currently, the mobile cell phonestandard including GSM, CDMA, 3G three, since the advent of mobile phones has gone through a first-generation analogue phones (1G), second-generation GSM, TDMA digital mobile phones, etc. (2G), 2.5G mobile communication technology CDMA and third generation mobile communication technology 3G. The transportation process ofchina cell phone jammeris vital to the quality ofchina cell phone jammer.
The analog network: analog network signals to analog modulation, the analog series uses frequency division multiple access. (Under the band of mobile 905-915MHZ, each 25KHZ to channels, support for a user calls). A simulated network with China Network (Motorola equipment) and B networks (Ericsson equipment) of the points, now have two networks to interoperate. Analog network signal distortion is small, so the sound quality with limited cell phoneBimei. And because the building earlier, coverage improved in most county-level cities are covered. The disadvantage of the analog network is a relatively small number of its channels, poor security. GSM Digital Network: GSM: GSM (Global System For Mobile Communication) network, the Global System for Mobile Communications, also known as ?GSM?, many companies involved in standards work. The industry development ofchina cell phone jammerwill be influenced by the market distribution ofchina cell phone jammerto some extent.
GSM digital mobile communication system is a major European telecom operators and manufacturers designed the composition of the Committee for Standardization, which is based on the cellular system evolved. China since late 1994, more than ten provinces and cities in the GSM cellular network to build its momentum all the world sigh, and now GSM digital network has covered 30 provinces (autonomous regions and municipalities), more than 300 regions and 2000 multiple counties and cities, with more than 40 countries and roaming. GSM uses digital modulation techniques, one of its key technology time division multiple access (in a time slot for each user on the selected carrier frequency and can only receive information under a specific time), GSM system has several important features: burglar copy good ability, network capacity, number of resource-rich, call clarity, stability, less susceptible to interference and strong, sensitive information, call dead less power consumption at the end of mobile cell phoneand so on. The company has decided the most suitable transportation method of cell phone jammer.

Source: http://www.celljammerchina.com/some-foreign-experts-of-china-cell-phone-jammer-will-attend-the-meeting/

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