Ntc/362 Week 1 Dq 1

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NTC/362 Week 1 DQ 1 What are the advantages and disadvantages of the various modulation techniques of analog signals? In researching this question I have found that continuous carrier wave (CW) analog modulation is a type of modulation in which an analog carrier wave’s characteristics are modified by an analog information-bearing signal. Today, this is predominantly referred to as analog modulation. There are three analog modulations. They are Amplitude modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM). These methods are based on altering one of the carrier’s characteristics: amplitude, frequency, or phase. In AM, FM and PM modulations each carrier changes in accordance with the information signal’s amplitude variations. When it comes to advantages and disadvantages there are performance factors to consider. They are spectral efficiency which identifies a communication system’s ability to achieve a given data rate within a given bandwidth. Next is power efficiency which identifies a communication system’s ability to preserve the accuracy of information in relation to the amount of power needed to transmit signals. And lastly system complexity which is performance factor that describe the ease and cost of designing, implementing, and operating the equipment used in the communication system. Modulations | Spectral Efficiency | Power Efficiency | System Complexity | AM | Less bandwidth than FM and PM | Less efficient than FM and PMMore prone to noise than FM and PM | Let complex than FM and PM | FM | More bandwidth than AM | More power efficient AMMore noise resistant than AM but less than noise resistant than PM | More complex than AM but less complex than PM | PM | More bandwidth than AM | More power efficient than AMMore noise resistant than AM and FM | More complex than AM and FM

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