The received power of a signal is measured as 5W, 0.04W, and 0.005W at distances of 1m, 5m, and 10m from the receiver, respectively. What is the path loss exponent?
The received power of a signal is measured as 5W, 0.04W, and 0.005W at distances of...
Question 4: Four RX power measurements were taken at distances of 100m, 200m, 1km and 3km from a TX and the measured RX power levels are OdBm, -20dBm, -35dBm and 70dBm, respectively. Assume the path loss obeys the log-distance model. Find the path loss exponent n that minimizes mean square error (MSE) between measuredand modeled values. (Hint: Use Log distance Path Propagation Model)
Consider a receiver with noise power -160dBm within the signal bandwidth of interest. Assume a simplified path loss model with do=lm, K obtained from the free space path-loss formula with omnidirectional antennas and fc = 1GHz, and y=4. For a transmit power of P= = 10mW, find the maximum distance between the transmitter and receiver such that the received SNR is 20dB.
Q2. Consider a microwave transmit-receive radio-link system. Given that, the transmitter power is Pt-5W at a carrier frequency of 6 GHz and the transmitter antenna gain is 40dB. Assume that the receiver antenna has a diameter of 60cm and has an aperture efficiency of 65 %. a) b) c) d) Determine the power density at a distance of 50m from the transmitter antenna. Find the directivity of the receiver antenna. Find the operating wavelength and the far-field distance of the...
(a) Under the free-space path-loss model, find the transmit power required to obtain a received power of 10dBm for a wireless system with isotropic antennas (Gl = 1) and a carrier frequency f = 5GHz, assuming a distance d = 10m. (b) Show that, under free-space path-loss model, doubling the distance attenuates the power received by approximately 6dB.
WHY The average received power of a wideband signal do not fluctuate significantly when the receiver is moving in a local area.?
3. The quality of a received signal is often characterized by the signal-to-noise-ratio (SNR), which is defined as SNR 10 log As you might expect from this Signal power in watts KTB definition, the unit of SNR is decibels (dB). The term in the denominator is the noise power, and it is generally specified as an effective noise temperature T multiplied by the product of Boltzmann's constant (K) and the bandwidth (B) of the signal in Hz. Generally we like...
4) The average noise power per unit bandwidth measured at the front end of an AM receiver is 10-watt/Hz. The modulating signal is sinusoidal, with a carrier power of 80 watts and a sideband power of 10 watts per sideband. The message bandwidth is 4 kHz. a) Assuming the use of an envelope detector in the receiver, determine the output signal-to-noise ratio of the system. b) By how many decibels is this system inferior to a DSB-SC modulation system?
2.DT Equalizer Design. Direct Path Source Receiver Reflected Path Ground The multipath propagation channel of a wireless communication system involves three paths from the transmitter to the receiver: a direct path. an indirect path via a small reflector introducing a differential delay of 10us and signal gain of 0.1 -a second indirect path via a large reflector introducing a differential delay of 15us and signal gain of 0.2. The differential delays and the attenuations are measured with respect to the...
MOMENTSA uniform rod 8m long weighing 5kg is supported horizontally by 2 vertical parallel strings @ p & Q and @ distances of 2m and 6m from one end.Weights of 1kg,1.5kg and 2kg are attached at distances of 1m, 5m and 7m respectively from the same end.Find the tension in each vertical stingShow all diagrams and workings
A receiver with a 100-2 input resistance operates at a temperature of 37°C. The received signal has a bandwidth of 8 MHz. Determine the thermal noise power in watts and dBm and the rms noise voltage.