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A cellular system is operated at a carrier frequency of 1.9 GHz. For a mobile user...
Solve the multi-task problem: The LEO cellular satellite communication system requires the forward link (from satellite to the earth mobile) signal-to-noise ratio (SNR) in the output of the earth station receiver to be 17dB. The link has the following specifications: Operation frequency f = 6 GHz Receiver antenna gain (earth station), Gr = 0 dB Transmitter antenna gain (satellite), Gt = 3 dB Distance to satellite, d = 1000 km Bandwidth of the receiver, B = 2 MHz Noise...
below is a direct sequence code division multiple access Q1 A LTE system employs orthogonal frequency division multiple30 access (OFDMA) transmission for downlink transmission, in which users are allocated a specific number of subcarriers for a predetermined amount of time, referred to as physical resource blocks (PRBs) in the LTE specifications. A PRB is defined as consisting of 12 consecutive subcarriers for one slot in duration. Given that the subcarrier spacing is 15 KHz, and transmission bandwidth over a 2.7GHz...