Monday, December 5, 2011

The general emissive power of cellular phone jammer

frequency planning simple user distinguished by a different serial number, it is not the same CDMA carrier in the adjacent district to use, flexible network planning, expansion simple. Although CDMA systems frequency planning is simple, but there are PN CDMA system short code planning, and planning compared to short code PN frequency planning is not necessarily easier. The    cellular phone jammer helps to protect your track privacy.

Overall planning of CDMA is not simple. On the contrary, to be more complex than the GSM system. (5) building a network of low cost CDMA system has a large capacity, low working frequency than GSM, so planning in CDMA, CDMA GSM station spacing are generally more sparse.

In the 2.5G stage, CDMA2000 1X RTT and GPRS technology has been significantly different in the transmission rate on the 1X RTT higher than GPRS, carrying on business in the new 1X RTT mature than GPRS, which provides more rapid rate of new business in . 2.5G to 3G technology system on the transition, CDMA2000 from 1X to CDMA2000 1X EV-DO GPRS to WCDMA transition than the transition smoother. 1.2.3 CDMA as a competitive advantage (1) the system capacity theoretically, using the same frequency resources in the case, CDMA mobile network capacity than analog networks 20 times, the actual use of the 10 times larger than the analog network, larger than the GSM 4-5 times. (2) 3 flexible configuration system capacity in CDMA systems, the increase in the number of users is equivalent to an increase in background noise, resulting in a decline in voice quality.
CDMA IS-95B provides system performance, and increase the user’s mobile communication device data traffic, providing 64kbps data service support. Subsequently, cdma2000 as narrow-band CDMA system the transition to third generation systems standard. cdma2000 standard research in the early stage, 1X and 3X proposed development strategy, but subsequent studies have shown that, 1X and 1X enhanced technology of the future direction of development. CDMA technology standardization, and promote this technology in the world-wide application. Currently in the United States, South Korea, Japan and other countries, CDMA technology has been a large-scale applications. In some European countries, some operators have built a CDMA network.

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