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How Interference Diversity of Hopping in GSM

In GSM system, the interference strength and distribution on each frequency carrier in cell are different, the carrier variation of the bursts of the same communication low the interference on signal, the radio wave interference on communication is equalized. If no hopping is used, the mobile station will always work on fixed frequency carrier, each … Read more

Some Passive characteristics definition for antenna

Here I write down some passive characteristics definition for antenna which include Port Isolation, Power capacity, Input Port of Antenna, Passive Intermodulation (PIM) and Dimensions and Weight of Antenna. For multi-port antennas, such as dual polarization antenna and dual band dual polarization antenna, the isolation must exceed 30 dB when the Rx port is the … Read more

What is Workload Modeling for LTE

Understanding the current subscriber behavior and trends is a valuable guide for a product manufacturer and operator of the capital investment. In this post a few key observations will be shared via the Internet and existing wireless high speed data transfer. The first observation is: 1. Increased bandwidth translates into more demanding users. This is not … Read more