People can use the battery of cell phone jammer when it is charged

So you can better save construction costs. (6) green technology system network average transmit power GSM 125 mW maximum transmit power 2 mW W CDMA 2 200 mW can be seen from the above data CDMA phone is a GSM cell phone the average transmit power of 2 / 125 CDMA phones greener . (7) low power spectral density as a key technology for CDMA spread spectrum technology, it expanded the power spectrum is very wide, so the power is low, the benefits are twofold: to prevent interference from other channels; to prevent interference with other channels. The    cell phone jammer    helps to protect your information confidentiality.1.2.4 CDMA technology holding point (1) CDMA is a spread spectrum communications, spread spectrum communication he has the following characteristics: ① anti-interference ability.
The battery of   cell phone jammer could be charged even the car hasn’t been powered on. ⑤ with soft capacity features. Peak in traffic by increasing the frame error rate can be used to increase the number of channels. When a light load of neighboring cells when a heavy, heavy load cell can reduce the pilot's transmission power, so that the cell edge users due to insufficient strength of the pilot to switch to the adjacent cell, so that the burden-sharing. ⑥ good compatibility. As the CDMA bandwidth large power distribution in a broad spectrum, then the power density is low, the interference of narrow-band analog system is small, so the two can coexist. That is, good compatibility. ⑦ CDMA frequency utilization is high, no frequency planning, which is one of the characteristics of CDMA. ⑧ CDMA efficient QCELP speech coding. People can use the battery of cell phone jammer when it is charged.Voice coding technology is the digital communication is an important issue. QCELP is the use of vector quantization code table difference signal, and according to the degree of voice-activated to produce a variable output rate signal. This compilation method is considered to be five horses currently the most efficient coding techniques, to ensure better voice quality under the premise of greatly improving the capacity of the system.
This is the basic characteristics of spread spectrum communication, all communication can not be compared. ② broadband transmission, anti-fading ability. ③ As a result of broadband transmission, the transmission channel power ratio of the useful signal interference signal power is much lower, so the signal seems hidden in the noise; that if the power density is relatively low, is conducive to signal hidden. ④ the relevance of using spread-spectrum code to obtain the user's information, anti-seized ability. ⑤ multiple users to simultaneously receive and transmit. (2) In spread spectrum CDMA communication systems, the use of new technology has some key new features: 4 ① diversity using a variety of ways. In addition to the traditional space diversity outside. The portable internally integrated high-volume Li battery of    cell phone jammer    could be used continuously for 2 hours.As the broadband transmission frequency diversity played a role, while the base station and mobile station using a RAKE receiver technology, the equivalent of time diversity effect. ② uses voice activation technology and technology sectors. Because the capacity of CDMA system disruption directly related to the use of voice activation, and sector-based technology can reduce the interference, can increase overall system capacity. ③ The mobile station assisted soft handoff. It can be achieved through the seamless transition to ensure continuity of the call, reducing the likelihood of dropped calls. Switch regions in the mobile station through multiple base station diversity reception signal, can reduce their transmission power, thereby reducing the interference of the surrounding base stations, so that together help to improve the reverse path of the capacity and coverage. ④ using the power control technology, which reduces the transmit power level standard.