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3G wireless monitoring and wireless monitoring WIFI difference between

now wireless monitoring industry more and more mature, very hot market. The wireless monitoring the market can be divided into two kinds: one kind is the 3G wireless monitoring; one is based on WIFI wireless monitoring carrier. Now many customers in the selection of the wireless monitoring is not clear which approach is better suited to the hands of the project, the following me the fundamental difference between the two, for friends to choose.

2, 3G wireless monitoring is the use of mobile (TD-SCDMA), telecommunications (CDMA2000 EVDO), China Unicom (WCDMA) technology of 3G access operators, since 09 years, the various operators to promote, many monitor manufacturers according to the R & D of related products. And the advantages of the 3G high speed download capacity, the ideal value transmission speed can reach 3Kbps~20Mbps, but because it is still in the promotion stage, so the transmission rate that has yet to be further research. Linkpower Fan Jingbo said, at present the limited capacity of 3G wireless bandwidth,web based security cameras, access Co., delay and other defects,2013 security cameras los angeles, the multi-user sharing, it is difficult to guarantee the wireless video monitoring rate and delay requirements, the main disadvantage or operators charge discharge fees are too high,2014 home security monitoring austin, the general customers can not accept.

, 3G wireless monitoring: strictly speaking, divided into 2G and 3G in two ways; one is 2G die earlier test,2013 wireless surveillance camera, another kind is the latest version of the 3G model test.

1, analog wireless monitoring is the wireless channel video signal directly modulated in 2.4G or 1G, sent out by the antenna, the monitoring center to receive the wireless signal through the antenna, the wireless receiver to the original video signal,2014 best cctv camera, the monitor mode without compression loss,2014 best wireless surveillance cameras for home, almost no delay, which can ensure video quality, but it is only suitable for point to point close (within 1KM) single path transmission, not suitable for large scale deployment. In addition, because there is no modulation calibration process, poor anti-interference ability,2014 digital wireless surveillance system, low frequency, so the radio signal in complex environment itself will have a great disturbance.

1, 2G wireless monitoring transmission methods including CDMA, GSM two models. The two modes of the lower hardware cost, large coverage, transmission speed is slow, the theoretical value of the transmission rate up to 153.6Kbps, in actual use can only reach 60~80Kbps. Because the video image bottom requires 512Kbps to smooth transmission, the speed can not reach the requirements of video. Therefore,2014 installation of cctv camera, in the wireless monitoring project,dome security camera, few manufacturers to choose. Another drawback is the operator for traffic fees are too high,cheap security camera system, every month, every year, will have a large fee. Only in a very remote, WIFI wireless devices do not to the case, will consider and have some money.

two, WIFI wireless monitoring: strictly speaking, WIFI wireless monitoring is divided into two ways; one is the simulation of wireless monitoring; another is the digital wireless monitoring.