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QUESTION 1
The new distribution centre is located in an industrial area and about 12 kms from the company’s headquarters. 12 kms is approximality 7.45645 miles. Unfortunately, the cables has not reached this area, and given the numerous obstacles to digging, it would be prohibitively expensive to install. The only choice left here is to use the wireless technology. But what form of wireless signal would we use? The wireless signal would have to go through walls (eliminating infrared), be able to traverse approximately 12kms (eliminate Bluetooth, Wireless Lans, Ultra-wideband, again infrared and ZigBee) and be able to carry a high-speed signal (again eliminate Bluetooth and ZigBee). for obvious reasons, microwave, satellite and WiMAX are reasonable solutions. The new distribution centre is located in an industrial area, industrial environments with heavy machinery produce electromagnetic radiation, and wireless transmission also can be disrupted by electromagnetic noise and interference from other transmisiions.Sunspots, although they do not happen often, can be disruptive to satellite transmissions. (Might eliminate satellite). It is worth noting that microwave transmission can be hampered by bad weather. Microwave will work only if the headquarters and the new distribution center are tall and no obstructions, such as other buildings are in the way (might eliminate microwave). In order for the company to establish a long-distance, high-throughput wireless connection, 802.16 (WiMAX) technology should be used. This technology which stands for Worldwide Interoperability for Microwave Access, is able to transmit and receive signals up to 30 miles when the antennas are fixed. Its maximum downlink throughput is 120 Mbps and its maximum uplink throughput is 60 Mbps. To resolve this problem of microwave I do require that we use WIMAX because it provides line-of-sight and

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