Virtual Labs

Study of Modulation schemes with Memory, like MSK, GMSK etc.

1. What does MSK stand for in digital communication?

a: Minimum Shift Keying Explanation

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b: Maximum Shift Keying Explanation

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c: Modulated Shift Keying Explanation

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d: Multi-State Keying Explanation

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2. Which of the following is a key characteristic of GMSK?

a: It uses a Gaussian filter to smooth the signal. Explanation

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b: It requires more bandwidth than MSK. Explanation

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c: It operates without any filtering. Explanation

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d: It is a type of amplitude modulation. Explanation

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3. What advantage does GMSK have over MSK?

a: Higher spectral efficiency Explanation

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b: Lower complexity Explanation

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c: No memory effect Explanation

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d: Higher bit error rate Explanation

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4. What type of modulation does MSK use?

a: Phase Shift Keying Explanation

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b: Frequency Shift Keying Explanation

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c: Amplitude Shift Keying Explanation

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d: Quadrature Amplitude Modulation Explanation

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5. In GMSK, the Gaussian filter helps to achieve which of the following?

a: Reduced out-of-band emissions Explanation

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b: Increased bit rate Explanation

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c: Higher power consumption Explanation

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d: Wider bandwidth Explanation

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6. Which of the following modulation schemes has the lowest bit error rate in noisy environments?

a: MSK Explanation

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b: GMSK Explanation

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c: PSK Explanation

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d: ASK Explanation

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7. What is a primary application of GMSK modulation?

a: Television broadcasting Explanation

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b: Satellite communication Explanation

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c: GSM cellular networks Explanation

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d: Wi-Fi networks Explanation

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8. How does MSK differ from conventional FSK?

a: MSK uses a continuous phase. Explanation

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b: MSK has higher bandwidth requirements. Explanation

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c: MSK modulates amplitude. Explanation

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d: MSK is less power efficient. Explanation

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9. What is the bandwidth efficiency of GMSK compared to traditional MSK?

a: Higher bandwidth efficiency Explanation

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b: Lower bandwidth efficiency Explanation

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c: Equal bandwidth efficiency Explanation

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d: Dependent on modulation index Explanation

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10. What is the modulation index in MSK?

a: 1 Explanation

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b: 0.5 Explanation

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c: 2 Explanation

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d: 0 Explanation

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