IT Wirless Technologies Essay Example | Topics and Well Written Essays - 1500 words

IT Wirless Technologies - Essay Example Power received (d = 8km) is 10 times greater than power received (d = 25km) (v) Solution: No. of UWB devices in city = 2 * 1 million No. of UWB devices in town 2 * 6000 = 166.67 No. of UWB devices in city is 167 times greater than that in the town b) (i) Solution: From Tables 3 and 4 it is seen observed that, the maximum tolerable power density radiated by the UWB devices is higher in town compared to that in the city. That is, at the same percentage of activity, the maximum tolerable interference limit is lower in the city when compared to the town. This implies that, city is the greater source of interference and thus has tighter restrictions. (ii) Solution: Yes, the answer to part b) (i) is consistent to that of the answers in part a) (iv) and (v). Because, from part a) we know that the number of UWB devices in the city are 167 times greater to those in the town. Which implies the interference by 1 % of the devices in city will much greater than the interference by 1% of the devices in the town. Also as the city covers wider area, the signal that has to travel through the interference for a longer distance (in the city) will have greater path loss and hence lower power received. (iii) Solution: Four factors that might effect the accuracy of the prediction of UWB interference are, 1) If the UWB transmitters are installed outdoors 2) If the UWB devices are all "ON" at the same time. 3) If the UWB devices are distributed in clusters ad not randomly. 4) If the UWB devices are operated in a pre-designed manner and not at random times. (iv) Solution: If UWB devices transmitting at -41.3 dBm/MHz over the...Which implies the interference by 1 % of the devices in city will much greater than the interference by 1% of the devices in the town. Also as the city covers wider area, the signal that has to travel through the interference for a longer distance Detect and Avoid technique can be used only for those RAS signals whose frequencies do not fall into the frequency band of the UWB devices. The minimum power (of the RAS signal) that can be detected by the detectors to avoid the RAS signal also matters. Streaming Video means to continuously receive and display video to the end user while it is being transmitted by the source. This means that streaming video requires higher bandwidth and faster data rate. 802.11n is used for streaming video around the home as it offers a higher Bandwidth and highly reliable connection that can reach throughout the home and is compatible with various network configurations that might be used at home. Base Station is a transmitter that operates within a given frequency channel and antenna sector and is responsible for transmitting data to the subscriber station and is equipped to control the subscriber station. Base Station can transmit data independent of other stations, but will depend on the channel if it is a TDD channel. Subscriber Station is a transceiver that receives data from the base station and can also send requests to base s