what are the different configuration parameters to adapt the wireless environment?Ripunjay Tiwari
Ans. In wireless environment the main parameters to achieve the wireless environment is the transmission and reception of an antenna, the antenna radiates electromagnetic energy into the medium (usually air), and for reception, the antenna picks up electromagnetic waves from the surrounding medium. There are basically two types of configuration for wireless transmission – directional and omnidirectional. For the directional configuration, the transmitting antenna puts out a focused must therefore be carefully aligned. In the omnidirectional case, the transmitted signal spreads out in all directions and can be received by many antennas. In general, the higher the frequency of a signal the more it possible to focus it into a directional beam.
Three general ranges of frequencies are of interest in our discussion of wireless transmission. Frequencies in the range of about 2 GHz (gigahertz= 109 Hz) to 40GHz are referred to as microwave frequencies at these frequencies, highly direction beams are possible, and microwave is quite suitable for point-to-point transmission. Microwave is also for satellite communication. Frequencies in the range of 30MHz to 1 Ghz are suitable for omnidirectional applications. We will refer to this range s the broadcast radio range.
Another important frequency range, for local applications is the infrared portion spectrum. This cover, roughly from 3*10.11 to 2*10.14 Hz infrared is useful to local point to point and multipoint applications within confined areas such as simple room.