haul networks via wireless alternatives. These factors include the choice of technology, cost implications, range, reliability, capacity, and SO on. Backhaul networks costs are primarily driven by two factors namely capacity per link and number of links. We will briefly discuss these factors in this section [13]. The communication link relies on the wireless backhaul equipment that can fulfill the given re- quirements for reliable communications. The design must consider all the losses (i.e., those due to electromagnetic wave propagation and equipment design or deterioration) and determine the transmitter power that will be reached at the receiving antenna. Various environmental conditions exert influence on the propagation of electromagnetic waves of the various frequencies. The curvature of earth is of great importance at microwave frequencies. The communication may be affected by various factors, all of which must be considered to establish a link. The purpose of radio links is the provision of reliable radio communications between two or more sites. When planning a backhaul network, the following components need to be considered at a minimum [12-13]. 7.3.11.1 Frequency Selection The separation (distance) of radio link's terminals is the basic criterion affecting the choice of frequency. Microwave links typically use frequencies above 6 GHz. Frequencies below 8 GHz do not suffer much from rain, fog or atmospheric attenuation. At 70 and 80, the atmospheric attenuation is very similar to the microwave bands of 18 and 38 GHz and less compared to that of 60 GHz band. 7.3.11.2 Modulation and Bandwidth The required bandwidth of communication systems is determined by the type of modulation used, which in turn, depends on the type of service used, that is, the information to be transmitted. A larger bandwidth is required if the shape of the transmitted waveform needs to be preserved. The required RF bandwidth is twice the modulation bandwidth that is, Nyquist rate. The Nyquist rate is the minimum sampling rate require