Find the power spectral density of an offset QPSK signal

Find the power spectral density of an offset QPSK signal Find the power spectral density of an offset QPSK signal produced by a random binary sequence in which symbols 1 and 0 (represented by + 1) are equally likely, and the symbols in different time slots are statistically independent and identicallydistributed. Is this the question […]

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For aim application that requires error detection only, we may

For aim application that requires error detection only, we may For aim application that requires error detection only, we may use a nonsystematic code. In this problem, we explore the generation of such a cyclic code. Let g(X) denote the generator polynomial, and rn(X) denote the message polynomial. We define the code polynomial c(X) simply […]

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Figure shows the block diagram of a beterodyne spectrum

Figure shows the block diagram of a beterodyne spectrum Figure shows the block diagram of a beterodyne spectrum analyzer. It consists of a variable-frequency oscillator, multiplier, band-pass filter, and root mean square (RMS) meter. The oscillator has amplitude A and square over the range A?0 to A?0 + W, where A?0 is the mid-band frequency […]

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By viewing the minimum shift keying

By viewing the minimum shift keying By viewing the minimum shift keying (MSK) scheme as a finite-state machine, construct the trellis diagram for MSK. (A description of MSK is presented in Chapter.) Is this the question you were looking for? If so, place your order here to get started!

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Figure shows the frequency-determining network of a voltage

Figure shows the frequency-determining network of a voltage Figure shows the frequency-determining network of a voltage-controlled oscillator. Frequency modulation is provided is produced by applying the modulating signal Am sin (2pA?mt) plus a bias Vb to a pair of varactor diodes connected across the parallel combination of a 200-ÂľH inductor and 100-pF capacitor. The capacitor […]

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Figure shows the idealized spectrum of a message signal m

Figure shows the idealized spectrum of a message signal m Figure shows the idealized spectrum of a message signal m (t). The signal is sampled at a rate equal to 1 kHz using flat-top pulses, with each pulse being of unit amplitude and duration 0.1 ms. Determine and sketch the spectrum of the resulting PAMsignal […]

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Binary data are transmitted over a microwave link at the

Binary data are transmitted over a microwave link at the Binary data are transmitted over a microwave link at the rate of 106b/s, and the power spectral density of the noise at the receiver input is 10–10W/Hz. Find the average carrier power required to maintain an average probability of error Pc < 10–4=”” for=””> (a) […]

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Figure shows the block diagram of a wideband frequency modulator

Figure shows the block diagram of a wideband frequency modulator Figure shows the block diagram of a wideband frequency modulator using the indirect method. This modulator is used to transmit audio signals containing frequencies in the range of 100 Hz to 15 kHz by a crystal-controlled oscillator. A second crystal-controlled oscillator supplies a sinusoidal wave […]

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