A radio channel has a bandwidth of 7MHz, and transmitted signal power equal to the noise power. Calculate the capacity of the channel
A radio channel has a bandwidth of 7MHz, and transmitted signal power equal to the noise...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise given as, 0, otherwise with B-200 kHz and N 10W Hz. The message bandwidth is 10 kHz and its average power is 10 W. Assume A,-1, 100kHz, and the channel attenuates signal power by a factor of 1000 (-30 dB). Assume that a suitable band-pass filter is used at the receiver to limit out-of-band noise. (a) Determine the average signal power at the receiver...
Assume a discrete signal of 8 voltage levels has been transmitted through a noisy channel with bandwidth of 3500 Hz. The SNR is 2500 Watts and the power of the noise is 2 Watts. A. What is the power of the signal? B. What should be the minimum sampling rate? C. What is the capacity of this channel?
Consider a point-to-point channel. Assume the bandwidth of the channel is 5 MHz and the signal-to-noise ratio of this channel is 24 dB. a) What is the capacity of this channel? b) How many signal levels are required to achieve the above maximum transmission rate?
8 8.6-4 For a DSB-SC system with a channel noise PSD of Sn() 10-12 and a baseband signal of bandwidth 5 kHz, the receiver output SNR is required to be at least 47 dB. The receiver is as shown in Fig. 8.30. (a) What must be the signal power Si received at the receiver input? (b) What is the receiver output noise power No? (c) What is the minimum transmitted power Sr if the channel transfer function is He)10-3 over...
A 2-bit binary sequence is transmitted over a noisy communication channel. The noise corrupts the signal in the sense that a transmitted digit transmitted can be flipped with probability 0.1. It has been observed that, across a large number of transmitted signals, the 0s and 1s are transmitted in the ratio 3:4. Given that the sequence 01 is received, calculate the probability that this sequence was transmitted.
A detection system with a bandwidth of 250Hz has a signal to noise ratio of 12 when the detector is at room temperature. Calculate the new signal to noise ratio if the detector is cooled to -196 °C and the bandwidth is reduced to 10Hz for (a) thermal noise and (b) shot noise.
An 8-ary PSK (phase shift keying) signal is transmitted over an additive, zero mean, band-limited Gaussian noise channel.The channel output is r(t)-s(t)+n(t), st<T, where s(tAcos 2rft+0) for ie 10,123,4,5,6,7) were,+8 16 8 The noise n(t) is narrowband, zero mean, bandpass Gaussian noise with power spectral density Sn (f) is shown in Figure 3, where B is the bandwidth of the noise S, (f) (Watts/Hz) 2 cf (Hz) Figure 3 T herefore, 2 2 2 0 elsewhere (i) What is the...
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. An information source generates one of 4 possible levels namely -4, 0, 4, and 8 with equal probabilities. These levels are transmitted over a channel which adds Gaussian noise with zero means and variance of 1. The noise is independent of the signal. The receiver employs a ML decision rule. Clearly identify, the decision rules at the receiver and calculate the probability of error. -4 4 4. An information source generates one of 4 possible levels namely -4, 0,...
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal is 155 dB (in passing from the input to the transmitting antenna to the output of the receiving antenna), and the available mean power-spectral density of the noise in the system from all sources has a mean power spectral density level 10-18 W/Hz (as if added at the receiving antenna's output). The bandwidth of the message signal m(t) is 8 KHz. Determine the output...